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

An extension member is attachable to a trailer hitch and extends away from the vehicle and is connected to a seating frame supporting a toilet seat.

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Class 152/282 - Radial securing means

Subclass of Class 152 - Resilient tires and wheels
Definition: The rim secured transversely extending leaf springs are
No. of patents: 0