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Method and arrangement for monitoring machines by means of their emitted sound waves
US 3,416,630 A
Filed
: 04/26/1967
Issued
: 12/17/1968
Est. Priority Date
: 04/27/1966
Status: Expired due to Term
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Current Assignee
Ernst J. Pohl
,
Gunter Schmitt-Thomas Karlhein
,
Werner Burck
Original Assignee
Ernst J. Pohl
,
Gunter Schmitt-Thomas Karlhein
,
Werner Burck
Inventors
Pohl, Ernst J.
,
GUNTER SCHMITT-THOMAS KARLHEIN
,
Burck, Werner
Application Number
US04/633,934
Time in Patent Office
601 Days
Field of Search
US Class Current
73/584
CPC Class Codes
G01M 15/00
Testing of engines
G07C 3/005
during manufacturing process
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