Safety knob

Details Safety knob Safety knob

1995-09-25

1997-02-18

Mortimer, Paula A.

Tools and hardware

Handle, knob or pull

Singular point of attachment

Patent

active

D03780457

REFERENCES:
patent: D203867 (1966-02-01), Russell et al.
patent: D238047 (1975-12-01), Meroni
patent: 703564 (1902-07-01), Ellison
patent: 1412720 (1922-04-01), Szafranski
patent: 1621876 (1927-03-01), Doerr
patent: 1668403 (1928-05-01), Haven
patent: 2039011 (1936-04-01), Leonard
patent: 2449711 (1948-09-01), Milligan
patent: 2525562 (1950-10-01), Reeves
patent: 3035567 (1962-05-01), Reeves
patent: 3200807 (1965-08-01), Culligan
patent: 3462183 (1969-08-01), Dudley et al.
patent: 3764103 (1973-10-01), Oliverio
patent: 4300525 (1981-11-01), Delgado et al.

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