Memorandum wrist watch
United States Patent 1539781

Inventors:
Egerton, Smythe Albert
Publication Date:
05/26/1925
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Assignee:
Egerton, Smythe Albert
Primary Class:
224/165
Other Classes:
224/164, 968/344, 368/41, D10/31, 63/1.140, 224/219, 224/152
International Classes:
G04B37/12; G04B37/00