Door knocker

Details Door knocker Door knocker

1984-05-07

1986-08-05

Bullock, B. J.

Tools and hardware

Fitting for door, window or furniture not elsewhere specified

Knocker

Patent

active

D02849372

REFERENCES:
patent: D008317 (1875-05-01), Conner
patent: D193836 (1962-10-01), Block
patent: D225964 (1973-01-01), Ballou
patent: D253749 (1979-12-01), Paulich
patent: 256093 (1980-07-01), Kupperman et al.
patent: 4189804 (1980-02-01), Flowerday

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