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Manufacturers Index - Grand Specialties Co.
Patents
This page contains information on patents issued to this manufacturer.

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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.

Patent Number Date Title Name City Description
1,473,833 Nov. 13, 1923 Doorstop Michael J. Sasgen Chicago, IL
1,473,834 Nov. 13, 1923 Doorstop Michael J. Sasgen Chicago, IL
1,656,394 Jan. 17, 1928 Doorstop Michael J. Sasgen Chicago, IL
1,687,517 Oct. 16, 1928 Doorstop Michael J. Sasgen Chicago, IL
1,876,173 Sep. 06, 1932 Adjustable doorstop Anthony M. Sasgen Chicago, IL
2,012,731 Aug. 27, 1935 Overhead door holder Michael J. Sasgen Chicago, IL
2,374,899 May. 01, 1945 Clamp Anthony M. Sasgen Chicago, IL The examples we have seen are marked with the patent number plus "Grand Clamp" and "Steel Alloy". They do not strongly resemble the patent image, looking more like a conventional C clamp with an additional small lever.
2,379,992 Jul. 10, 1945 Work supporting and finishing apparatus Anthony M. Sasgen Chicago, IL "This invention relates to an apparatus for supporting and finishing a cast or otherwise formed work blank, and more particularly to an apparatus for supporting and finishing a C-shaped work blank such as the body member of a C-clamp..."
D143,096 Dec. 04, 1945 Design for a C-clamp Anthony M. Sasgen Chicago, IL
2,445,188 Jul. 13, 1948 Quick-clamping vise Anthony M. Sasgen Chicago, IL
2,450,303 Sep. 28, 1948 Clamping device of the vise type Anthony M. Sasgen Chicago, IL
2,461,687 Feb. 15, 1949 Welder's clamp Fred P. Hopfeld Elmwood Park, IL This C clamp for arc welding has provision for attaching the ground electrode.
631,281 Oct. 31, 1949 Improvements in or relating to vises Fred P. Hopfeld Elmwood Park, IL This is the British equivalent of US Patent 2,546,906. The British patent specification does not mention the inventors, it only names the assignee.
    Improvements in or relating to vises Anthony M. Sasgen Chicago, IL  
2,490,923 Dec. 13, 1949 Quick action C-clamp Anthony M. Sasgen Chicago, IL
2,546,906 Mar. 27, 1951 Screw-actuated vise having releasable nut for quickly opening or closing the jaws Fred P. Hopfeld Elmwood Park, IL
    Screw-actuated vise having releasable nut for quickly opening or closing the jaws Anthony M. Sasgen Chicago, IL  
2,560,131 Jul. 10, 1951 Hand truck with elevator platform Anthony M. Sasgen Chicago, IL
    Hand truck with elevator platform Fred P. Hopfeld Elmwood Park, IL  
2,656,864 Oct. 27, 1953 Straight beam clamp with adjustable self-locking jaw Fred P. Hopfeld Elmwood Park, IL
2,708,048 May. 10, 1955 Handling equipment for barrels or the like Fred P. Hopfeld Elmwood Park, IL
2,905,347 Sep. 22, 1959 Drum handling lift truck Fred P. Hopfeld Elmwood Park, IL
2,948,363 Aug. 09, 1960 Telescoping elevators Fred P. Hopfeld Chicago, IL
3,052,323 Sep. 04, 1962 Lift truck Fred P. Hopfeld Elmwood Park, IL
3,216,599 Nov. 09, 1965 Lift truck with a detachable mast assembly, and a propelling and elevating control system Fred P. Hopfeld Elmwood Park, IL
3,360,078 Dec. 26, 1967 Lifts Fred P. Hopfeld Elmwood Park, IL
D242,985 Jan. 11, 1977 Doorstop Anthony M. Sasgen Villa Park, IL