US Patent: 2,591,452
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| Internal Dimension Gauge
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Patentee:
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| Max Maag (exact or similar names) - Zurich, Switzerland |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 21, 1945 |
| Granted: |
Apr. 01, 1952 |
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Joel Havens
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Description: |
| Joseph K. Schofield - patent attorney
Application in Switzerland, 13 Nov 1944. |
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