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US Patent: 365,744
Drilling-machine
Patentee:
John Worth Heyer - Hartford, CT

USPTO Classifications:
144/285, 175/393, 178/69G, 29/DIG101, 29/DIG66, 29/DIG79, 408/57, 82/132, 82/901

Tool Categories:

Assignees:
Pratt & Whitney Co. - Hartford, CT

Manufacturer:
Not known to have been produced

Witnesses:
H. R. Williams
Charles L. Burdett

Patent Dates:
Applied: Jan. 13, 1887
Granted: Jun. 28, 1887

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for Pratt & Whitney Co.

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