Patent DE492873C successfully refreshed from Google Patents.
DE492873C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Device for establishing a zero point that can be tapped in three-phase networks for the connection of zero point choke coils
Assignee: BBC BROWN BOVERI and CIE
•
Filing: 1925-06-21
•
Granted: 1930-03-04
•
Expires: 1945-06-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-01 17:18
CPC Classifications
H; H02; H02H; H02H9/00; H02H9/08
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.