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US Patent: 401,520
Method of Operating Electro-Magnetic Motors
Patentee:
Nikola Tesla (exact or similar names) - New York, NY

USPTO Classifications:
318/781

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Feb. 18, 1889
Granted: Apr. 16, 1889

Patent Pictures:
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