| Patent Number |
Title Of Patent |
Date Issued |
| RE29846 |
Electronic combination lock and system |
November 28, 1978 |
| A unitary self-contained electronic combination lock is provided which includes a dead bolt manually operable from one side and operable from the other side only in response to insertion of a data combination card carrying a unique binary code in the form of selectively positioned me |
| 4125008 |
Electrically operated lock |
November 14, 1978 |
| A unitary self-contained electrically operated lock is provided which includes a latch wheel manually releasably rotatable from a first side of the lock housing by pulling on a handle from a first side and releasably rotatable from a second side of the housing only in response to inserti |
| 4108366 |
Apparatus for providing and sensing coded information |
August 22, 1978 |
| A card reader adapted to receive a coded card is provided which includes an alternating current source and sensing means connected to the alternating current source. The sensing means includes a plurality of tuned circuits, each having a sensing coil. Each coil has a pressed powder ferro |
| 3949388 |
Physiological sensor and transmitter |
April 6, 1976 |
| A small self-contained sensor and transmitter assembly including a sensor for detecting physiological and bio-medical phenomena and a transmitter for transferring such data to a receiver for display and other use is disclosed. In one embodiment, the sensor is adapted to be secured within |
| 3930561 |
Low distortion pyramidal dispersion speaker |
January 6, 1976 |
| A loudspeaker horn has a conical section adapted to receive the driver assembly of a speaker system at the small cone end. An exponential section secured to the large cone end, concentrically with the cone longitudinal axis, flares outwardly to terminate in a square cross-section horn mo |
