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US Patent: 243,770
Holder for Grinding Tools
Patentees:
Frederick N. Gardner - Hartford, Hartford County, CT
James E. Woodbridge - Hartford, Hartford County, CT

USPTO Classifications:
451/369

Tool Categories:
metalworking machines : grinders : grinding attachments

Assignees:
None

Manufacturer:
Hartford Tool Co. - Hartford, Hartford County, CT

Witnesses:
John P. Healy
David G. Gordon
W. C. McArthur
Jason H. Lambert

Patent Dates:
Applied: Dec. 27, 1880
Granted: Jul. 05, 1881

Patent Pictures:
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Description:
This tool holder was sold by the Pratt & Whitney Co.in their 1893 catalogue.

Please see also patent #256,668.

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