Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 7341114 | Turf aerator A safety mechanism for a turf aerator having a frame and an engine with a governor that generally prevents the turf aerator from operating at full power unless the safety mechanism is engaged. A blocking mechanism and a manual actuation device are mounted to the fra... | 03/11/2008 |
| 7021720 | Till track vehicle A vehicle that uses a steel lug wheel assembly while in the field and has retractable rubber tires for transport on paved roads. The vehicle is capable of simultaneously performing multiple farm operations in a field. The multiple farm operations include shredding, ... | 04/04/2006 |
| 5642677 | Walk-behind self-propelled multi-functional nursery device A walk-behind, multi-functional device for use in a nursery is capable cultivating while applying fertilizer and herbicide as desired. An electric clutch assembly combines with a steering assembly to permit easy maneuverability of the walk-behind device.... | 07/01/1997 |
| 5184685 | Self-contained nursery cultivator A nursery cultivating assembly is carried on a modified zero turning radius tractor and includes a cultivating device, a spraying device, and a tank assembly operably interconnected thereon, while providing for trees to be planted closer together.... | 02/09/1993 |
| 4492271 | Tine tiller with tines and wheels each rotatable in either direction A tine tiller has a frame mounted on traction wheels for movement in either direction. The frame has tines rotatably mounted on each side thereof and driven in either direction irrespective of the direction of movement of the frame by rotation of the trac... | 01/08/1985 |
| 4287955 | Rotary tiller device A rotary tiller device with a rotor disposed for rotation about a vertical axis is adapted for mounting on the lift arms of a mobile vehicle and includes a yieldable arm suspension mechanism and spring tiller teeth depending downwardly from the rotor, bot... | 09/08/1981 |
| 4266617 | Tractor with full-floating tool bar A tractor having a frame supported by ground-engaging drive wheels, a tool bar carried by the tractor and on which various implements may be mounted, the tool bar being universally mounted on the frame whereby the implement may be raised above or lowered ... | 05/12/1981 |
| 4174756 | Self-propelled disk harrow machine A self propelled disk harrow having four gangs of disc members attached thereto which are rotated to propel the disk harrow and to thereby till the soil. Wheels are provided for allowing the disk harrow to travel on public roads and to aid in propelling t... | 11/20/1979 |
| 4124079 | Driven implement connected to rockable motor of a vehicle A self-propelled tiller-planter including a motor providing hydraulic motive power for various operating mechanisms. A tiller pushed by said planter and hydraulic means is provided for lifting and lowering the tiller assembly into inoperative position abo... | 11/07/1978 |
| 4037544 | Agricultural machine A self-propelled agricultural machine which includes a vehicle capable of automonously advancing when driven, and an assembly of implements capable of processing the soil during advancement of the vehicle. The machine includes a primary source of mechanic... | 07/26/1977 |
| 3970154 | Tool power system usable as substitute for vehicle propulsion The ditcher is provided with two engines. The first engine powers the hydraulic system which rotates the digging wheel. The second engine powers the hydraulic system which actuates the wheel lifting cylinders, the conveyor system and the track driving mea... | 07/20/1976 |