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US Patent: 2,816,489
Sine plate
Patentees:
Alonzo P. Smith (exact or similar names) - Hawthorne, CA
Lloyd W. Robbins (exact or similar names) - Redondo Beach, CA

USPTO Classifications:
248/127, 269/165, 269/309, 269/85, 269/902, 269/93, 269/95, 33/537

Tool Categories:
metalworking tools : jigs and fixtures : angle bars and angle plates
metalworking machines : milling machines : milling machine accessories

Assignees:
Denco Machine Products - Hawthorne, CA

Manufacturer:
Denco Machine Products - Hawthorne, CA

Witnesses:
Unknown
Patent Dates:
Applied: Apr. 15, 1955
Granted: Dec. 17, 1957

Patent Pictures:
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