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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 4099344 | Shading unit for plant propagation A plant propagation unit has a continuous wall encircling the bed to protect the plants from high wind and dust, and is preferably spaced a short distance above the bed to permit escape of water from the bed and flow of air under the wall and upwardly thr... | 07/11/1978 |
| 4092591 | Electric meter A combined electric meter for measuring AC and DC voltage and ohms is provided with read-outs having indicators progressively actuated for simultaneously indicating AC and DC voltages and for indicating ohms. The read-outs are in the form of light emittin... | 05/30/1978 |
| 4085773 | Water heater overflow pan An overflow unit for a water heater installation has a plastic, resilient polystyrene pan with a bottom wall for receiving the bottom of the heater and a continuous side wall including inner and outer walls which diverge downwardly in a range of approxima... | 04/25/1978 |
| 4069652 | Harvesting apparatus Harvesting apparatus particularly suited for picking citrus fruit, apples, and the like, has an adjustable boom mounted on a vehicle with a harvesting head secured to the free end of the boom for tilting and turning to either side and for forward and rear... | 01/24/1978 |
| 4042203 | Easel A folding artist's easel, particularly suited for a classroom or teaching environment, utilizes square steel tubing to form a rigid triangular base, a supporting column, and a telescopic brace, with pivotal connections therebetween. The pivotal connection... | 08/16/1977 |
| 4029435 | Retractable blade for a helicopter rotor A helicopter rotor having retractable blades each having a three dimensional truss including flexible cables which connect a blade member with a pitch member directly secured to a rotor hub, the cables providing for retraction of the blade member to a sto... | 06/14/1977 |
| 4019828 | Wind driven apparatus Wind driven apparatus is disclosed in the form of a windmill, and in the form of an electric generating unit for a vehicle such as a boat or an airplane or the illustrated automobile. The apparatus includes a base mounted for rotation, preferably about a ... | 04/26/1977 |
| 4015555 | Air boat An air boat has a power unit including a typical automotive engine and a pylon mounted on the engine clutch housing and carrying an aircraft type propeller at its upper end. Belts or a chain housed within the pylon drivingly connect the motor and propelle... | 04/05/1977 |
| 4013296 | Phonograph record storage and protection apparatus A phonograph record is provided with a ring on its rim, the ring being of greater thickness than the record and extending outwardly from both faces of the record to protect the grooved record face from adjacent records on a record player, and when the rec... | 03/22/1977 |
| 4003598 | Chair mounted tray An assembly for mounting a tray on a chair may be an integral part of a chair arm or may be releasably attached to a chair, and includes a cooperating slide and track, one on the chair and the other on a tray. The tray may be swung about a vertical axis a... | 01/18/1977 |
| 3951619 | Method of making a grinding wheel A grinding wheel has a series of deep and narrow circumferential grooves between circular grinding sections having radially convex surfaces for forming serrations in a knife edge. The grooves are filled with a non-abrasive substance to strengthen the whee... | 04/20/1976 |
| 3939815 | Engine starter and bracket In an engine assembly including a starter mechanism having a housing receiving a starter rope reel normally retained in the housing by ears integral with the housing and bent inwardly to underlie the reel; the provision of one or more brackets for support... | 02/24/1976 |
| 3939507 | Water closet water volume control A water closet is provided with a device for limiting the amount of water discharged from its water tank during flushing. More particularly, the volume of water discharged from the tank is limited by low water level reached during flushing. The water limi... | 02/24/1976 |
