Door knockers

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Patents Grantslast 30 patents

Information Patent Grant
2767424
- Patent number 2,767,424
- Issue date Oct 23, 1956
- A45 - HAND OR TRAVELLING ARTICLES
Information Patent Grant
2747538
- Patent number 2,747,538
- Issue date May 29, 1956
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
2715243
- Patent number 2,715,243
- Issue date Aug 16, 1955
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
2523158
- Patent number 2,523,158
- Issue date Sep 19, 1950
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
962332
- Patent number 962,332
- Issue date Jun 21, 1910
- G01 - MEASURING TESTING
Information Patent Grant
602573
- Patent number 602,573
- Issue date Apr 19, 1898
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
124368
- Patent number 124,368
- Issue date Mar 5, 1872
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
Information Patent Grant
103446
- Patent number 103,446
- Issue date May 24, 1870
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...