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Spirograph
US 3,045,666 A
Filed
: 11/23/1959
Issued
: 07/24/1962
Est. Priority Date
: 11/24/1958
Status: Expired due to Term
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0
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0
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0
Petitions
3
Forward Citations
0
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Current Assignee
Borivoj Dubsky
,
Hubert Felkel
,
Oldrich Straka
,
Rudolf Feuereisl
Original Assignee
Borivoj Dubsky
,
Hubert Felkel
,
Oldrich Straka
,
Rudolf Feuereisl
Inventors
BORIVOJ DUBSKY
,
OLDRICH STRAKA
,
Felkel, Hubert
,
RUDOLF FEUEREISL
Application Number
US03/854,963
Time in Patent Office
974 Days
Field of Search
US Class Current
600/538
CPC Class Codes
A61B 5/08
Detecting, measuring or rec...
A61B 5/0803
Recording apparatus special...
A61B 5/087
Measuring breath flow
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