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US Patent: 642,743
Commutator for Electric Motors or Generators
Patentee:
Sydney Evershed (exact or similar names) - London, England

USPTO Classifications:
310/219

Tool Categories:
electrical devices : electric motors : motor commutators

Assignees:
Sydney Evershed - London, England
Evershed & Vignoles, Ltd. - London, England

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Sep. 15, 1899
Granted: Feb. 06, 1900

Patent Pictures:
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