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Pneumatic tube carrier
US 1,807,834 A
Filed
: 04/02/1930
Issued
: 06/02/1931
Est. Priority Date
: 04/02/1930
Status: Expired due to Term
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Current Assignee
Philip Erby
Original Assignee
Philip Erby
Inventors
Erby, Philip
Application Number
US02/440,892
Time in Patent Office
426 Days
Field of Search
US Class Current
406/188
CPC Class Codes
B65G 51/06
Despatch carriers for tube ...
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