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Sonic system for measuring filaments
US 2,538,444 A
Filed
: 02/03/1949
Issued
: 01/16/1951
Est. Priority Date
: 02/03/1949
Status: Expired due to Term
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Current Assignee
Paul A De Mars
Original Assignee
Paul A De Mars
Inventors
DE MARS PAUL A
Application Number
US03/074,457
Time in Patent Office
712 Days
Field of Search
US Class Current
73/160
CPC Class Codes
B65H 2701/31
Textiles threads or artific...
B65H 63/067
using fluid sensing means, ...
G01B 17/00
Measuring arrangements char...
G01N 29/04
Analysing solids using acou...
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