Patent US4711552A successfully refreshed from Google Patents.
Patent DE635285C successfully refreshed from Google Patents.
DE635285C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Device for the automatic regulation of the charging current in rectifier systems with buffer batteries by means of a choke in the alternating current circuit
Assignee: AUGUST A HETTICH
•
Filing: 1932-04-12
•
Granted: 1936-09-14
•
Expires: 1952-04-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-09 05:23
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/02; H02J2207/00; H02J2207/20
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.