Patent US2052375A successfully refreshed from Google Patents.
US2052375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion regulator
Assignee: Askania Werke AG
•
Filing: 1932-07-12
•
Granted: 1936-08-25
•
Expires: 1952-07-12
Abstract
No abstract record available.
Inventors
- 👤 Wunsch Guldo
- 👤 Ziebolz Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:45
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/003; Y; Y10; Y10S; Y10S236/00; Y10S236/01
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
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-08-25 | 1940-02-24 | 1940-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-08-25 | 1944-02-24 | 1944-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-08-25 | 1948-02-24 | 1948-08-25 | $7700.00 | Window Closed / Lapsed |