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US Patent: 908,872
Ball bearing
Patentee:
George O. Leopold - Philadelphia, PA

USPTO Classifications:
16/DIG.27, 384/609, 54/7

Tool Categories:

Assignees:
North Brothers Manufacturing Co. - Philadelphia, PA

Manufacturer:
Not known to have been produced

Witnesses:
Wm. A. Barr
Jos. H. Klein

Patent Dates:
Applied: Mar. 12, 1908
Granted: Jan. 05, 1909

Patent Pictures:
USPTO pdf tiff
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