Wheel

Details Wheel Wheel

1998-09-29

1999-10-05

Spear, Robert M.

Transportation

Perambulator, invalid chair, or stretcher

Walker

1215

Patent

active

D04147243

REFERENCES:
patent: D52430 (1918-09-01), Destribats
patent: D239457 (1976-04-01), Chesler
patent: D316284 (1991-04-01), Knudsen
patent: D323806 (1992-02-01), Stewart
patent: D325011 (1992-03-01), Markling
patent: D349529 (1994-08-01), Knudsen
patent: D363457 (1995-10-01), Coddington
patent: D398692 (1998-09-01), Wilson et al.
patent: D408776 (1999-04-01), Sacco et al.
patent: 5372534 (1994-12-01), Levy et al.
Marshal 304 Tire, 1997 Tread Design Guide, p. 107.
MRF NDMS Tire, 1997 Tread Design Guide, p. 111.

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