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US Patent: 2,304,766
Universal Coupling
Patentee:
Lawrence E. Pratt (exact or similar names) - Bedford, OH

USPTO Classifications:
403/58, 464/119, 81/177.75

Tool Categories:
wrenches : wrench components

Assignees:
Cornwell Quality Tools Co. - Mogadore, OH

Manufacturer:
Unknown

Witnesses:
none listed
Patent Dates:
Applied: Aug. 03, 1940
Granted: Dec. 08, 1942

Patent Pictures:
BONNEY U.S.A. / Pat. No. 2304766 - courtesy photo
USPTO (New site tip)
Google Patents
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Description:
Known 3/8 inch drive example marked "BONNEY U.S.A. / Pat No. 2304766."

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