US2318834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System, in particular to internal combustion engine, including compressors
Assignee: Individual
•
Filing: 1941-10-03
•
Granted: 1943-05-11
•
Expires: 1961-10-03
Abstract
No abstract record available.
Inventors
- 👤 Birkigt Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:03
CPC Classifications
F; F02; F02B; F02B29/00; F02B29/04; F02B29/0406; F02B29/0437; F02B29/0443; F01; F01P; F01P3/00; F01P3/20; F01P3/22; F01P2060/00; F01P2060/02; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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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) | 1946-05-10 | 1946-11-09 | 1947-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-05-10 | 1950-11-09 | 1951-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-05-10 | 1954-11-09 | 1955-05-11 | $7700.00 | Window Closed / Lapsed |