Patent US2444644A successfully refreshed from Google Patents.
US2444644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed responsive regulation of turbosupercharged engines
Assignee: Individual
•
Filing: 1943-07-31
•
Granted: 1948-07-06
•
Expires: 1963-07-31
Abstract
No abstract record available.
Inventors
- 👤 Fullemann Johann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:18
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/007; F02B37/12; F02B37/22; F01; F01N; F01N13/00; F01N13/08; F01N13/10; F01N13/107; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1856024A
Cited
US1895538A
Cited
US1816787A
Cited
GB479278A
Cited
US2296268A
Cited
US2359615A
Cited
US2380777A
Cited
US2384381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-06 | 1952-01-05 | 1952-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-06 | 1956-01-05 | 1956-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-06 | 1960-01-05 | 1960-07-06 | $7700.00 | Window Closed / Lapsed |