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La Spirotechnique Industrielle et Commerciale
La Spirote
Active Patents
0
Total Holdings
2
Patent Holdings
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Patent No.
Title
Status
Filing Date
Grant Date
Claims
Actions
US2989062A
Breathing apparatus for divers
Expired / Lapsed
1958-05-02
1961-06-20
0
Details
US2918061A
Breathing apparatus
Expired / Lapsed
1956-11-26
1959-12-22
0
Details