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US Patent: 1,335,721
Heavy squaring-clamp
Patentee:
Oscar Bergstrom (exact or similar names) - Chicago, IL

USPTO Classifications:
269/244, 269/250

Tool Categories:
work holding : clamps

Assignees:
Handy Manufacturing Co. - Chicago, IL

Manufacturer:
Not known to have been produced

Witnesses:
Dwight B. Cheever
Minnie Sternberg

Patent Dates:
Applied: Nov. 17, 1919
Granted: Apr. 06, 1920

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Carl Matthews
"Vintage Machinery" entry for Handy Manufacturing Co.

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