Title:
Stage-lift flowing device
Document Type and Number:
United States Patent 1767201


Inventors:
Alexander, Boynton
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Sponsored by:
Flash of Genius
Publication Date:
06/24/1930
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Assignee:
Alexander, Boynton
Primary Class:
137/155
Other Classes:
417/115, 137/505, 137/501, 417/112
International Classes:
F04B49/10