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

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Patent No. 5571247

Self Containing Enclosure for Protection from Killer Bees

A self contained protective enclosure with an opening for entry and egress and a screen for ventilation and viewing.

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Class 400/367 - Interposed components driven by filter shaft


Subclass of Class 400 - Typewriting machines
Definition: Subject matter wherein the typewriter is driven by a power
No. of patents: 1
Last issue date: 08/03/1976


NumberTitleIssue Date
3972404Typewriter shift mechanism
Depressing the upper case shift key lever pivots a balance beam from a first to a second position, thereby raising the lower case shift lever to an inactive position. When the upper case shift key lever is released, the balance beam is returned to its fir... 		08/03/1976
 
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