Category:1940s patents

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20th-century patents: ← 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s →

Subcategories

This category has the following 9 subcategories, out of 9 total.

1940 patents (8 F)
1941 patents (2 F)
1942 patents (4 F)
1943 patents (1 F)
1944 patents (9 F)
1945 patents (1 C, 8 F)
1946 patents (3 F)
1948 patents (4 F)
1949 patents (1 C, 2 F)

Media in category "1940s patents"

This category contains only the following file.

Karle József szabadalma,a propulziós hajóról.jpg 1,160 × 1,588; 372 KB

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