Patent FR1377451A successfully refreshed from Google Patents.
FR1377451A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Symmetrical arrangements transforming a direct voltage into an alternating voltage formed by square waves of any duration
Assignee: Societe Generale de Constructions Electriques et Mecaniques
•
Filing: 1963-09-17
•
Granted: 1964-11-06
•
Expires: 1983-09-17
Abstract
No abstract record available.
Inventors
- 👤 Fernand Petolas
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-30 20:40
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/521; H02M7/53; H02M7/537; H02M7/5387; H02M7/53871
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.