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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52,995
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Mar. 06, 1866
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Improvement in locks
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George A. Walker |
Boston, MA |
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Improvement in locks
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F. L. Walker |
Boston, MA |
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Improvement in locks
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Anson Hardy |
Boston, MA |
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54,774
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May. 15, 1866
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Improvement in mode of attaching circular saws to their arbors
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Albert L. Rice |
Worcester, MA |
In 1869, G. A. Walker of Boston was advertising that they manufactured "Rice's Patent Saw Mandrels". |
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118,308
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Aug. 22, 1871
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Improvement in paper-cutting machines
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George A. Walker |
Boston, MA |
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124,774
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Mar. 19, 1872
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Improvement in paper-cutting machines
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George A. Walker |
Boston, MA |
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RE5,463
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Jun. 24, 1873
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Improvement in paper-cutting machines
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George A. Walker |
Boston, MA |
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145,464
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Dec. 09, 1873
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Improvement in machines for cutting paper
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George A. Walker |
Boston, MA |
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179,984
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Jul. 18, 1876
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Improvement in spring air-pistols
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George A. Walker |
Boston, MA |
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209,995
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Nov. 19, 1878
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Improvement in paper-cutting machines
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George A. Walker |
Boston, MA |
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225,963
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Mar. 30, 1880
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Water-meter
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Charles Henry Bacon |
Boston, MA |
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