US3054552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airborne compressor system
Assignee: Specialties Development Corp
•
Filing: 1958-07-17
•
Granted: 1962-09-18
•
Expires: 1978-07-17
Abstract
No abstract record available.
Inventors
- 👤 Ralph S Doubleday
- 👤 Alfred W Siman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:58
CPC Classifications
F; F04; F04D; F04D27/00; F04D27/02; F04D27/0253
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1025222A
Cited
GB191117391A
Cited
GB285910A
Cited
US2324236A
Cited
US2342219A
Cited
US2295833A
Cited
GB561464A
Cited
US2433220A
Cited
US2691388A
Cited
US2916999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |