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1919-05-09 |
1922-05-16 |
Robert S Blair |
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1920-07-23 |
1924-08-26 |
Ripamonti Ettore |
Safety screw
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*
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1930-01-20 |
1933-09-12 |
Willard Storage Battery Co |
Storage battery unit
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1931-05-09 |
1934-05-01 |
Jr Fred Salmen |
One way screw
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*
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1931-07-06 |
1933-01-10 |
United Screw And Bolt Corp |
Screw head
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1934-10-22 |
1935-03-29 |
Usl Battery Corp |
Perfectionnements aux dispositifs d'aération des accumulateurs
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1936-04-20 |
1940-11-12 |
Prest O Lite Battery Company I |
Storage battery construction
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1937-12-07 |
1940-06-11 |
Willard Storage Battery Co |
Storage battery
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1939-12-26 |
Electric Storage Battery Co |
Vent and filling means for storage battery cells
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Goodrich Co B F |
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Goodrich Co B F |
Storage battery cover assembly
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1938-12-07 |
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Electric Storage Battery Co |
Filling and venting plug for storage battery cells
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Gen Motors Corp |
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1963-08-21 |
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Gen Am Transport |
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1965-05-25 |
1967-04-11 |
Walton Marvin |
One-way screw for operation with high speed power tools
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1974-03-19 |
Teledyne Inc |
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1976-12-20 |
1979-10-23 |
Wright Line Inc. |
Security screw
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1978-11-14 |
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Tamperproof fastener
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1992-04-28 |
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1992-05-12 |
1993-12-17 |
日本電池株式会社 |
蓄電池用液口栓
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JPH062558U
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電池
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