Ballast-bag for scenery
United States Patent 1335607

Inventors:
Salisbury, Charles A.
Publication Date:
03/30/1920
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Assignee:
Salisbury, Charles A.
Primary Class:
383/18
Other Classes:
383/907, 383/25, 248/99, 383/107, 482/86
International Classes:
A63J1/00