US2836347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffuser
Assignee: Power Jets Research and Development Ltd
•
Filing: 1952-07-28
•
Granted: 1958-05-27
•
Expires: 1972-07-28
Abstract
No abstract record available.
Inventors
- 👤 John C Barr
- 👤 Hodge James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:33
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/44; F04D29/441; F05; F05D; F05D2250/00; F05D2250/50; F05D2250/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190724403A
Cited
US885108A
Cited
US1056689A
Cited
US1171926A
Cited
US1691319A
Cited
US1617133A
Cited
DE724553C
Cited
US2370202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |