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US Patent: 1,928,001
Projection Indicator Measuring Instrument
Patentees:
Erik H. Aldeborgh (exact or similar names) - Poughkeepsie, NY
Park D. Ritchey (exact or similar names) - Poughkeepsie, NY
Lawrence G. Spealman (exact or similar names) - Poughkeepsie, NY
Christian E. Ruf (exact or similar names) - Poughkeepsie, NY

USPTO Classifications:
353/40

Tool Categories:

Assignees:
Standard Gage Co., Inc. - Poughkeepsie, NY

Manufacturer:
Standard Gage Co., Inc. - Poughkeepsie, NY

Witnesses:
Unknown

Patent Dates:
Applied: Sep. 15, 1931
Granted: Sep. 26, 1933

Patent Pictures:
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