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US Patent: 2,381,648
Spark Gap
Patentee:
Frank W. Curtis - Springfield, Hampden County, MA

USPTO Classifications:
313/147, 313/243, 313/32, 313/352, 313/45

Tool Categories:
industrial machines : industrial machine mechanisms

Assignees:
Van Norman Machine Tool Co. - Springfield, Hampden County, MA

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 16, 1943
Granted: Aug. 07, 1945

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for Van Norman Machine Tool Co.

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