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

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

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Class 280/192 - Clutch

Subclass of Class 280 - Land vehicles
Definition: Devices provided with a clutch between the drum and wheel.
No. of patents: 0