Patent AT155592B successfully refreshed from Google Patents.
AT155592B
Expired / Lapsed
AT
⏱️ 0.0 years remaining
Device for converting direct current into periodically variable current.
Assignee: Karl Hermann Dr Schmidt
•
Filing: 1937-07-29
•
Granted: 1939-02-25
•
Expires: 1957-07-29
Abstract
No abstract record available.
Inventors
- 👤 Karl Hermann Dr Schmidt
- 👤 Marius Widakowich
Bibliographic Details
Application Number
—
Jurisdiction
AT
Data Source
google_patents
Last Synchronized
2026-10-29 18:43
CPC Classifications
—
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.