Thermoelectric marker
United States Patent 2272780

Inventors:
Schweyer, Daniel H.
Publication Date:
02/10/1942
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Assignee:
Schweyer, Daniel H.
Primary Class:
401/2
Other Classes:
222/146.500
International Classes:
B43K5/18; B43K7/03; B43K8/22; B43M1/02; H05B3/02; B43K5/00; B43K7/00; B43K8/00; B43M1/00