Door knocker

Tools and hardware – Fitting for door – window or furniture not elsewhere specified – Knocker

Patent

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D1006

Patent

active

D02560933

REFERENCES:
patent: D160671 (1950-10-01), Stolper
patent: D214774 (1969-07-01), Kunkel
patent: 2747538 (1956-05-01), Morse et al.

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