Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7209725 | Analog zero if FM decoder and embodiments thereof, such as the family radio service A method and system for directly down-converting FM signals to demodulated baseband information signals that can be used to directly down-convert analog FM signals and digital FM signals to demodulated baseband information signals. In an embodiment, the method inclu... | 04/24/2007 |
| 7013912 | Apparatus and system for utility waste and venting An improved high rise building drainage system method and apparatus for conducting waste water from plumbing fixtures, such as lavatories and the like, through prefabricated, modular waste-vent stack units extending through intervals and stack boxes for such units o... | 03/21/2006 |
| 4861132 | Self-aligning precision guide pin A precision guide assembly (11) comprising a receptacle (13) having an at least part-cylindrical passage (19) with an axis (27), a guide pin (15) sized to be inserted into the passage (19) of the receptacle (13) and having an axis (31). The guide pin (15)... | 08/29/1989 |
| 4368941 | Electrical jack frame A jack frame for an electrical jack of the type having a plurality of jack springs and adapted for side-by-side mounting in an electrical jack panel. One embodiment includes a single piece of jack frame material bent into the desired configuration. A seco... | 01/18/1983 |
| 4154994 | Patch module A patch module assembly consists of a two piece frame structure, which provides three parallel jack receptacles entering the frame through one end for receiving patch cord wand. The sides of the frame are closed by printed circuit boards which are electri... | 05/15/1979 |
| 4149211 | Line surge protection device for telephone system A unitary line surge protector for removable connection to an individual, existing type-444 connecting block and jack assembly of a main distribution frame of a telephone exchange system at a telephone office or substation. Each connecting block and jack ... | 04/10/1979 |
| 4119811 | Photo-vibratory transducer An elongated manually manipulable housing contains a photocell at one end for sensing energy levels in the visible frequency spectrum causing said photocell to correspondingly change in electrical conductivity. A portable power source in the housing is co... | 10/10/1978 |
| 4034157 | Test jack for mounting on printed circuit boards A test jack assembly for use on printed circuit cards in which two interlocking pieces of plastic material are employed to rigidly support and insulate a number of jack springs from each other and provide contact terminals whereby the entire assembly may ... | 07/05/1977 |
