Patent US2951853A successfully refreshed from Google Patents.
Patent US2023418A successfully refreshed from Google Patents.
US2023418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control for internal combustion engines
Assignee: Schramm Inc
•
Filing: 1930-07-01
•
Granted: 1935-12-10
•
Expires: 1950-07-01
Abstract
No abstract record available.
Inventors
- 👤 Alfred N Gustafson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:12
CPC Classifications
F; F02; F02D; F02D9/00; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/0225; F02D2700/0228; F02D2700/023; F02D2700/0233; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544
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) | 1938-12-09 | 1939-06-10 | 1939-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-12-09 | 1943-06-10 | 1943-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-12-09 | 1947-06-10 | 1947-12-10 | $7700.00 | Window Closed / Lapsed |