Doorknob

Details Doorknob Doorknob

1995-06-05

1997-06-17

Mortimer, Paula A.

Tools and hardware

Handle, knob or pull

Singular point of attachment

0806

Patent

active

D03799166

REFERENCES:
patent: 4838053 (1989-06-01), Shen
patent: 5177987 (1993-01-01), Shen
patent: 5364139 (1994-11-01), Bergen et al.
patent: 5481890 (1996-01-01), Millman
patent: 5484179 (1996-01-01), Mader

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