US Patent: 1,303,829
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Stock for Spirit Levels
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Patentee:
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Gustave A. Vogel (exact or similar names) - New Britain, CT |
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Patent Dates:
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Applied: |
Aug. 11, 1917 |
Granted: |
May 13, 1919 |
USPTO (New site tip) Google Patents
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Russ Allen.
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Description: |
Body is constructed of a steel I-beam cross section with aluminum flanges.
Known example marked with Mfg, patent date, and "STEEL CENTER" |
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