Famous Patents
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 |
| 4340347 | Scrap recovery system Particulate plastic materials are moved from a supply hopper through a former and formed into a product, the product is cut, and the scrap from the cut product is moved from the cutting area back to the supply hopper by an open conduit pneumatic induction... | 07/20/1982 |
| 4337844 | Tree support for hunters A tree-climbing hunter's support apparatus includes a tree-gripping frame section and a collapsible frame section that extends from the tree-gripping section to unfold and support a flexible lounge seat. The positioning of the seat for supporting a hunter... | 07/06/1982 |
| 4337878 | Method of weighing and dispensing material from a surge bin Apparatus for weighing-out material from a collapsible surge bin. The surge bin is mounted above a collapsible frame such that the points of attachment of the surge bin to the collapsible frame comprise a load cell for weighing the surge bin and the conte... | 07/06/1982 |
| 4336072 | Method for removing vinyl decals Vinyl decals are removed from a painted surface without damaging the painted surface by contacting the decal with a composition consisting essentially of one or more of the following aromatic solvents: toluene, xylene and aromatic naphtha; and methyl ethy... | 06/22/1982 |
| 4332379 | Collapsible exercise back pack A collapsible training device to be worn by a person during physical exercise. The device includes a flexible weight carrying member, with at least one opening in the member positioned at its bottom for containing a flexible weight member. Straps attached... | 06/01/1982 |
| 4332097 | Drum magazine for automatic pistol or the like A cartridge feeding drum magazine for use with semiautomatic or full-automatic firearms such as pistols or submachine guns. A rotor is provided within a drum housing to define an annular cartridge-receiving channel, and a magazine extension joins the drum... | 06/01/1982 |
| 4332021 | Dictation system including dictate station identifier and control of access to particular recorders A dictation system including means for manually or automatically providing a sequence of identifier signals, a decoder for decoding the identifier signals, and inhibiting means for rendering a dictation recorder inoperable in the absence of a predetermine... | 05/25/1982 |
| 4324087 | Garment bagging system Tubular bag material is threaded downwardly between spaced support members. A garment support assembly is inserted into the tubular bag material at a level below the support members and then moved upwardly between the support members and rests on the supp... | 04/13/1982 |
