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US Patent: 1,274,816
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Patentee:
Nikola Tesla (exact or similar names) - New York, NY

USPTO Classifications:
73/497, 73/524, 73/54.32

Tool Categories:

Assignees:
Waltham Watch Co. - Waltham, MA

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Dec. 18, 1916
Granted: Aug. 06, 1918

Patent Pictures:
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