FR643065A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Methods and means for obtaining direct currents or potentials of constant value, with variable sources
Assignee: Henri Andre
•
Filing: 1927-10-27
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Granted: 1928-09-10
•
Expires: 1947-10-27
Abstract
No abstract record available.
Inventors
- 👤 Henri Andre
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-31 15:40
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/06; H02M7/10
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