U.S. patents available from 1976 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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Assignee: Sierra Instruments, Inc.


Location: CarmelValley, CA
No. of patents: 5

NumberTitleIssue Date
4800754Wide-range, adjustable flowmeter
A fluid bypass type flowmeter has a main passage which is configurable to various effective diameters by selectably adding pre-defined additional cross-sections comprised of an adjustable laminar flow element located within a bore for fine adjustm=ent of ...
01/31/1989
4487062Mass flowmeter
An improved mass flowmeter of the type having a primary passage for the fluid whose flow rate is to be measured, a sensor tube which serves as a secondary passage for the fluid and is connected to the primary passage at upstream and downstream locations, ...
12/11/1984
4461173Multirange flowmeter
A multi-range gas flowmeter having a primary gas flow passage and a secondary passage which houses the flow measuring device and which is connected to the primary passage at its inlet and outlet ends. A multi-position valve is located in the primary passa...
07/24/1984
4246788Method and apparatus for sampling of a particle-bearing gas
A method and apparatus for sampling a particle-bearing gas in which a vacuum is applied to the gas to generate a stream of gas, the flow of the stream is maintained constant, and particles are collected from the stream. A constant flow controller responsi...
01/27/1981
3983743Apparatus and method for the analysis of a particle-laden gas
An apparatus for the collection of particles from a gas containing particles which comprises a first means for directing the flow of said gas toward a second means for collection of at least a portion of said particles by the process of impaction, the fir...
10/05/1976
 
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