U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

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Patent No. 5823572

Self Defense Weapon With Memo

A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.

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Class 400/331 - Including plural ratchet wheels


Subclass of Class 400 - Typewriting machines
Definition: Subject matter wherein the regulating mechanism includes
No. of patents: 2
Last issue date: 08/25/1981


NumberTitleIssue Date
4285605Escapement mechanism and backspace mechanism for a moving paper carriage typewriter having dual pitch capability
A mechanism which will function to allow the escapement of the carriage of a typewriter in one of two predetermined escapement pitches and be capable of backspace operation from a single backspace input for both pitches regardless of which escapement pitc...
08/25/1981
3978967Typewriter tabulator
The tabulator blade rack consists of a pivotally and axially movable rod. Depressing the desired decimal tabulation key frees the carriage from the escapement for movement in the typing direction, raises the corresponding tabulator stop, and rotates the t...
09/07/1976
 
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