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3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7263937 | Seed tube guard A mutually-engageable or interlocking connection between a seed tube guard and a frame member mounted to a seed planting machine. The mutually-engageable connection includes a yoke having a front journal and a rear journal with a gap, the yoke, carried on the frame ... | 09/04/2007 |
| 7168376 | Seed boot for a seeding machine An integral cast seed boot is provided with a mounting assembly for securing the seed boot to a planting unit frame. A single furrow opener disc is rotatively mounted to the planting unit frame by a bearing assembly. The seed boot defines a seed entry passage having... | 01/30/2007 |
| 7131384 | Seed tube guard assembly for agricultural planters A seed tube guard assembly for agricultural planters has floating wear plates to improve the wear life of the seed tube guard. The assembly includes a support bracket having an upper end attached to a planter shank assembly and a lower end positioned between a pair ... | 11/07/2006 |
| 6990911 | Seed planting assembly and liquid application device for same A planting assembly including a frame, a furrow opening mechanism, a seed tube for directing a seed into a furrow, a liquid source, a liquid delivery conduit having a delivery end, and a furrow closing mechanism. An adapter is configured for mounting to the seed tub... | 01/31/2006 |
| 6918342 | Planter bracket assembly for supporting appurtenances in substantial alignment with the seed tube An improved bracket assembly for supporting seed planting appurtenances in substantial alignment with respect to a seed tube of an agricultural planter. The bracket assembly comprises a housing having opposing first and second sides. The housing includes mounting st... | 07/19/2005 |
| 6220191 | Liquid dispenser for seed planter The present invention is a planter which embeds planted seeds into the ground and then dispenses liquid in the vicinity of the embedded seeds. The planter includes a flexible arm which drags upon the ground and presses the deposited seeds into the ground ... | 04/24/2001 |
| 6178901 | Seed boot and seed positioner A furrow opener of an air seed planter is equipped with a seed boot and seed positioner for planting one or more rows of seeds in soil. The seed boot has walls providing a passage for directing seeds into a furrow. The seed positioner attached to the seed... | 01/30/2001 |
| 6082274 | Liquid dispenser for seed planter with diverter The present invention is a planter which embeds planted seeds into the ground and then dispenses liquid in the vicinity of the embedded seeds. The planter includes a flexible arm which drags upon the ground and presses the deposited seeds into the ground ... | 07/04/2000 |
| 5852982 | Liquid dispenser for seed planter The present invention is a planter which embeds planted seeds into the ground and then dispenses liquid in the vicinity of the embedded seeds. The planter includes a flexible arm which drags upon the ground and presses the deposited seeds into the ground ... | 12/29/1998 |
| 5730074 | Liquid dispenser for seed planter The present invention is a planter which embeds planted seeds into the ground and then dispenses liquid in the vicinity of the embedded seeds. The planter includes a flexible arm which drags upon the ground and presses the deposited seeds into the ground ... | 03/24/1998 |
| 5673638 | Resilient seed firming attachment for a planting machine A resilient seed firming attachment for a planting machine designed to effectively place seed at a consistent depth and at consistent spacing. The attachment may be of any geometrical configuration having a length adequate to firm the seed in the opened f... | 10/07/1997 |
| 5595130 | Planting unit A planting unit utilizing a single disk opener supported for rotation about a horizontal axis offset at a small angle from the transverse direction for opening a furrow. A seed tube assembly is located adjacent the rearward facing side of the disk and inc... | 01/21/1997 |
| 5431232 | Quick change mounted packer system A cultivator is equipped with detachable harrows or detachable packers. When the cultivator is used for direct seeding, narrow openers cut through the earth, and seed pneumatically transported from an air seeder, is placed immediately behind the openers. ... | 07/11/1995 |
| 5425318 | Resilient seed firming attachment for a planting machine A resilient seed firming attachment for a planting machine designed to effectively place seed at a consistent depth and at consistent spacing. The attachment may be of any geometrical configuration having a length adequate to firm the seed in the opened f... | 06/20/1995 |
| 5417171 | No-till seeder and fertilizer A seed and fertilizer boot is mounted on a conventional cultivator shank. The boot has side-by-side fertilizer and seed tubes. One tube leads to a downwardly and rearwardly sloping delivery spout while the other delivery tube projects below the delivery s... | 05/23/1995 |
| 5372205 | Furrow covering hoe for one handed operation A hand held garden implement (FIG. 1) for refilling a furrow, requiring only one hand for operation, and allowing the operator to stand and walk fully erect. A handle (11) is attached into a receptacle (12) on a cover plate (13) which is connected to an i... | 12/13/1994 |
| 5323720 | Revegetation method Surface mined lands are reseeded by dispensing grass, forb and shrub seed from a seed drill with seed-dispensing boxes connected to plural dispensing tubes which drop seed on the earth's surface and wherein at least one seed box is operable to dispense co... | 06/28/1994 |
| 5092255 | Seed boot extension A flexible seed boot extension fabricated from an ultra-high molecular polyethylene sheet and releasably held in position by a slot and retaining lug so that seed bounce and soil coverage variations are reduced while desired seed flow from the boot to the... | 03/03/1992 |
| 4995325 | Setting wheels for seed drills A wheel (4) for setting sown seeds, for use in a sowing machine, is rigidly connected in rotation with at least one gauging wheel (5) having a rolling radius smaller than the radius of the periphery of the setting wheel (4). The gauging wheel (5) is a whe... | 02/26/1991 |
| 4989676 | Sweeper system for lawn mowing An improved sweeper system for use with a grass mowing machine for use in the care of golf course greens in which the lawn mowing machine has at least one mower assembly, the sweeper system including a sweeper structural support affixed to and extending f... | 02/05/1991 |
| 4930431 | No-till field implement An implement for agricultural field work is primarily useful for preparing a field for no-till planting and comprises a wheel carried frame for carrying a massive fertilizer hopper which has apertures in its bottom portion through which fertilizer flows a... | 06/05/1990 |
| 4759301 | Seed drill A seed drill which will allow seed to be planted at a substantially constant depth regardless of contours and irregularities in the ground surface. The said drill has a tyne pivotally mounted on a frame for angular movement about a substantially horizonta... | 07/26/1988 |
| 4694759 | Seed drill A seed drill for applying seed and/or fertilizer has a frame, reservoir, and sowing shares. The sowing shares are attached to the frame in such a way that they can move in an upright plane by means of superimposed and at least approximately parallel strut... | 09/22/1987 |
| 4267783 | Seed bed preparation method and apparatus A farm implement is provided having a sub-soiler followed by a seed bed preparation tool and a planter. The seed bed preparation tool includes a rotary bladed portion for filling in the furrow left by the sub-soiler with soil turned up by the sub-soiler a... | 05/19/1981 |
| 4207823 | Planter A compact agricultural planter unit is provided for narrow row crops. The unit includes a pair of double disk furrow openers in combination with adjustable depth gauge wheels. The disks and wheels are carried by frame structure positioned between the whee... | 06/17/1980 |
| 4037545 | Machine for distributing material Machine for seeding designed to be pulled by a tractor and outfitted with seed drills for depositing of the seeds in the soil. A furrow opener is mounted forward of the seed drill, and a furrow closer is mounted aft of the seed drill. The furrow closer is... | 07/26/1977 |
