Title:
Diving apparatus
United States Patent 1423923

Inventors:
Eckert Jr., James Clendenin
Publication Date:
07/25/1922
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Assignee:
Eckert Jr., James Clendenin
Primary Class:
137/382
Other Classes:
128/201.110, 137/512, 405/185, 405/186, 137/512.150, 137/851
International Classes:
B63C11/20; B63C11/02