Alton B Heimbach received two patents associated with the Lever Wrench Company of Duluth, Minnesota.
Patent
1,142,426 issued June 8, 1915
1,385,994 issued August 2, 1921 – 2 years between application and issue
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Alton B Heimbach received two patents associated with the Lever Wrench Company of Duluth, Minnesota.
Patent
1,142,426 issued June 8, 1915
1,385,994 issued August 2, 1921 – 2 years between application and issue
Return to Home Page