If you find a patent number or patent date by this manufacturer that is not on this
list, please contact the Site Historian.
Key to Links for Patent Information
USPTO = U.S. Patent Office .
Images of the actual patent can be viewed on the U.S. Patent Office web site but
a special TIFF viewer must be installed with your browser in order properly work.
More information on how to configure your computer to view these patents can be
found at TIFF image Viewers
for Patent Images.
DATAMP = Directory of American Tool And
Machinery Patents . A sister site to VintageMachinery.org with information
on patents related to machinery and tools. A much easier user interface than the
USPTO's for finding information on machinery patents.
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2,563,467
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Aug. 07, 1951
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Quick-acting vise having sliding jaw shank clutched by bell-crank cam actuated by an oscillating eccentric
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Philip Hartmann |
Racine, WI |
The Hartmann Manufacturing Co. was earlier named the Hartmann Vise Co. |
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2,565,965
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Aug. 28, 1951
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Cam for sliding screw-operated vise jaws to final clamping position
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Philip Hartmann |
Racine, WI |
The Hartmann Manufacturing Co. was earlier named the Hartmann Vise Co. |
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3,133,617
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May. 19, 1964
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Hydraulic variable speed drive
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Philip Hartmann |
Racine, WI |
This patent has improvements to patent 2,679,306. The assignee, Hartmann Manufacturing Co., was earlier named the Hartmann Vise Co. |
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3,264,944
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Aug. 09, 1966
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Fluid pump or motor having roller vanes
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George W. Brand |
Racine, WI |
The Hartmann Mfg. Co. was earlier named the Hartmann Vise Co. |
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Fluid pump or motor having roller vanes
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Philip Hartmann |
Racine, WI |
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