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US Patent: 819,820
Ventilating Means for Inclosed Machines
Egbert M. Tingley - Pittsburgh, PA

USPTO Classifications:
277/431, 310/63, 384/286

Tool Categories:

Westinghouse Electric & Manufacturing Co. - East Pittsburgh, PA

Not known to have been produced

Wesley G. Carr
Birney Hines
C. L. Belcher
Otto S. Schainer

Patent Dates:
Applied: Mar. 17, 1905
Granted: May 08, 1906

Patent Pictures:
USPTO pdf tiff
Google Patents
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Westinghouse Works Collection
"Vintage Machinery" entry for Westinghouse Electric & Manufacturing Co.

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