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US Patent: 2,052,153
Spherometer
Patentee:
Horace H. Willis (exact or similar names) - Pelham, NY

USPTO Classifications:
33/501

Tool Categories:
layout tools : measurement gauges

Assignees:
None

Manufacturer:
Sperry Gyroscope Co., Inc. - Brooklyn, NY

Witnesses:
none listed
Patent Dates:
Applied: Dec. 29, 1931
Granted: Aug. 25, 1936

Patent Pictures:
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Report data errors or omissions to steward Joel Havens
Description:
Herbert H. Thompson - patent attorney

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