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US Patent: 1,187,109
Locking mechanism
Harry A. Stuernagel - Hartford, CT

USPTO Classifications:
24/134R, 269/204, 269/249

Tool Categories:
work holding : clamps : bar and pipe clamps


Hartford Clamp Co. - Hartford, CT

Heath Sutherland
L. L. Markel

Patent Dates:
Applied: Apr. 21, 1916
Granted: Jun. 13, 1916

Patent Pictures: [ 1 | 2 | 3 ]
USPTO pdf tiff
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An example of this patent was seen, in the form of a curved bar clamp bearing this patent date. A catalog page shows these curved clamps: "These circle or radius clamps are used by most casket manufacturers for gluing oval panel casket tops... and can be obtained in several sizes and most any radius."

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