The first commercial microwave oven was nearly 6 feet tall and weighed in at 750 pounds.
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| Number | Title | Issue Date |
| 6048151 | Threaded fastener A compressibly resilient strip is retainably disposed in an axial slot in a threaded shank which is advanced through a bore in a plurality of workpieces. A rigid retainer member is inserted into the slot to urge the resilient strip against the bore to inc... | 04/11/2000 |
| 5573311 | Anti-rotation device for wheel spindle nut A retainer for preventing rotation of a spindle nut relative to a wheel spindle. The retainer engages a key way of the spindle and a groove of the spindle nut to prevent rotation of the spindle nut relative to the spindle. The retainer has a semi-circular... | 11/12/1996 |
| 4973210 | Anchors for fixing to dense concrete, masonry and the like A non-expandible anchor for use in tensile zones of strong material having a compressive strength of at least 20 N/mm2 includes a cutting portion having a deep, coarse, raised, external helix formed with a cutting edge and having interruptions ... | 11/27/1990 |
| 4648768 | Locknut assembly for high-speed rotary components A lock assembly for securing nuts to rotatably driven shafts in which a generally U-shaped locking spring is mounted with one leg thereof disposed along an opening in the rotatably drive shaft or a component keyed to the shaft and the other leg thereof di... | 03/10/1987 |
| 4645394 | Fastener apparatus A fastening apparatus is adapted to be inserted and removed from one side of a work piece having an opposite side which is substantially inaccessible to a worker. A first, externally threaded member is threadingly engaged with a receiving structure, and a... | 02/24/1987 |
| 4505628 | Bearing locknut A bearing lockout assembly having a locking cup piece which maintains locking keys in retentive association in counterbores of a lockout is disclosed. The locking cup piece is keyed on its inner diameter to a shaft and provided on the edge of its outer di... | 03/19/1985 |
| 4504249 | H-Key adjustable pulley An adjustable pulley construction including a first disc having a belt-engaging surface and a centrally located, internally threaded annular hub, the hub having an exterior flat face and an interior recess; and a second disc having a belt-engaging surface... | 03/12/1985 |
| 4501521 | Locking fastener assembly A locking fastener assembly has a fastener with a generally cylindrical body with external threads for assembly with a hollow outer member. Crenellations are provided at a first end of the body for engaging an inner member in the hollow member for prevent... | 02/26/1985 |
| 4418935 | Pin lock for adjustable link of a three-point hitch A pin lock for a turnbuckle of an ajdustable link on a three-point hitch. The pin locks the threads of the turnbuckle and is retained in the locking position by a retainer ring.... | 12/06/1983 |
| 3957394 | Marine propeller mounting device A shaft coupled at one end to motive means is externally threaded in spaced proximate relation with the opposite free end thereof. A plurality of keyways supporting a plurality of keys are provided at the free end of the shaft. A propeller mount supportin... | 05/18/1976 |