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| Patents for Joseph N. Landau | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,104,517 | Jul. 21, 1914 | J.N. Landau | Automatic multiple-chuck drill-press | multiple spindle drill presses | |
| 2,035,555 | Mar. 31, 1936 | J.N. Landau | Automatic fountain pen | ||
| 2,084,529 | Jun. 22, 1937 | J.N. Landau | Container cap | ||
| 2,134,133 | Oct. 25, 1938 | J.N. Landau | Massage device | ||
| 2,240,992 | May 06, 1941 | J.N. Landau | Fountain pen | ||
| 2,300,512 | Nov. 03, 1942 | J.N. Landau | Shaving appliance | ||
| 2,398,540 | Apr. 16, 1946 | J.N. Landau | Drawn-in collet chuck | collets and collet holders | |