US2613028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air compressor for use on aircraft
Assignee: Rolls Royce PLC
•
Filing: 1947-03-19
•
Granted: 1952-10-07
•
Expires: 1967-03-19
Abstract
No abstract record available.
Inventors
- 👤 Davis Christopher Ainsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:06
CPC Classifications
F; F04; F04D; F04D17/00; F04D17/08; F04D17/10; F04D17/105; F02; F02C; F02C7/00; F02C7/04; F04D29/00; F04D29/40; F04D29/42; F04D29/44; F04D29/441; F04D27/00; F04D27/02; F04D27/0207; F04D27/0215; F04D27/023; F05; F05D; F05D2250/00; F05D2250/50; F05D2250/52; Y; Y10; Y10S; Y10S415/00; Y10S415/914
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US974345A
Cited
US2317723A
Cited
US2305226A
Cited
US2342219A
Cited
US2316452A
Cited
US2344835A
Cited
US2399865A
Cited
US2435836A
Cited
US2453524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |