Bizarre Patents
Combination Beverage Container and Spittoon
A combination beverage container and spittoon includes a bottom portion including outer wall and a first inner wall defining a spittoon space.
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| Number | Title | Issue Date |
| 4383253 | Ionization smoke detector The detector comprises a first electrode defined by a bolt mounted on an annular insulator which in turn is mounted on a printed circuit board and a second electrode defined by a cup shaped member which is aligned with the bolt and positioned with the int... | 05/10/1983 |
| 4287513 | Door knob alarm device The alarm device includes a resilient metallic spring strap which is received over a doorknob and against the shank of the doorknob and which forms an input contact to the device. The device further includes an oscillator which outputs a signal through a ... | 09/01/1981 |
| 4258358 | Door opening sensing and alarm producing device The device includes a housing, a keyboard on the housing, and a loudspeaker and electric components within the housing. The housing is mounted on a door adjacent a magnet mounted on the door frame. The device includes an audio alarm circuit including a lo... | 03/24/1981 |
