US2652973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air injector
Assignee: EDWARD J NEWHOUSE
•
Filing: 1951-01-10
•
Granted: 1953-09-22
•
Expires: 1971-01-10
Abstract
No abstract record available.
Inventors
- 👤 Vaughan R Dibble
- 👤 Jr Vaughan R Dibble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:44
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/16; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/313; Y10T137/3133
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US776724A
Cited
US1163724A
Cited
US1184447A
Cited
US1139991A
Cited
US1941766A
Cited
US2447173A
Cited
US2506528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |