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US Patent: 2,538,289
Diaphragm chuck
Patentee:
Merton H. Arms (exact or similar names) - Springfield, VT

USPTO Classifications:
279/127, 279/130, 279/139, 279/2.05

Tool Categories:
metalworking machines : grinders
metalworking machines : gear making machines

Assignees:
Bryant Chucking Grinder Co. - Springfield, VT

Manufacturer:
Bryant Chucking Grinder Co. - Springfield, VT

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 17, 1947
Granted: Jan. 16, 1951

Patent Pictures: [ 1 | 2 ]
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Vintage Machinery entry for Bryant Chucking Grinder Co.

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