US Patent: 1,492,095
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| Electrically-driven tool
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Patentees:
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| Alonzo Galloway Decker (exact or similar names) - Baltimore, MD |
| Samuel Duncan Black (exact or similar names) - Baltimore, MD |
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Patent Dates:
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| Applied: |
Jun. 14, 1920 |
| Granted: |
Apr. 29, 1924 |
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Patent Pictures:
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1 | 2
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Jeff Joslin
Vintage Machinery entry for Black & Decker Mfg. Co., Ltd.
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Description: |
| An improvement to patent 1,245,860; the improvement is to the on-off switch to address a problem with unequal contact force in a pair of contacts. |
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