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Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.

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Class 330/4.8 - Gyromagnetic type (e.g., ferrite)


Subclass of Class 330 - Amplifiers
Definition: Subject matter wherein the nonlinear reactance is of the
No. of patents: 1
Last issue date: 03/01/1994


NumberTitleIssue Date
5291145Microwave processing equipment
Novel microwave processing equipment includes a silicon single crystal containing neutral {110} planar four vacancies, a cooling mechanism for holding the silicon single crystal to a low temperature, a light pumping mechanism for irradiating light to the ... 		03/01/1994
 
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