Category:1941 patents

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1941 reconstruction

1941 conversions

1941 restorations

1941 renovations

1941 repairing

1941 work's replicas

1941 productions

1941 reproductions

1941 reissue models

1941 model changed

1941 released

1941 introductions

1941 re-introductions

1941 copyrighted

1941 developments

1941 discontinuations

1941 inventions

Phase of product life cycle →

1940s patents : ←; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1948; 1949; →

Media in category "1941 patents"

The following 2 files are in this category, out of 2 total.

US2233258A Electrical Musical Instrument (1939-09-05 filed, 1941-02-25 published) by Laurens Hammond - Solovox.pdf 1,158 × 1,702, 15 pages; 2.22 MB
US2245338A Musical Instrument (1940-07-30 filed, 1941-06-10 published) by Laurens Hammond - Novachord.pdf 1,158 × 1,702, 5 pages; 550 KB

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