Door knob safety device attachment
United States Patent 3082028
US Patent References:
Doorknob attachment
- - 2587285

No-grip doorknob cover
- - 2781220


Inventors:
Werle, Erwin H.
Publication Date:
03/19/1963
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Assignee:
Werle, Erwin H.
Primary Class:
292/1
Other Classes:
16/86R, D08/322, 267/152, 292/347, 74/566, 292/DIG.002, 16/85, 267/144
International Classes:
E05B13/00
Foreign References:
SE124588A