Patent US3609756A successfully refreshed from Google Patents.
US2991973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling of bodies subject to a hot gas stream
Assignee: Parsons and Marine Engineering Turbine Research and Development Association
•
Filing: 1955-09-16
•
Granted: 1961-07-11
•
Expires: 1975-09-16
Abstract
No abstract record available.
Inventors
- 👤 Cole Ernest John
- 👤 Walker Vincent
- 👤 Wells Jack Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:54
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/182; F01D5/183
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB619634A
Cited
GB619722A
Cited
GB660007A
Cited
US2774566A
Cited
GB641146A
Cited
FR1007303A
Cited
GB682868A
Cited
FR1090193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |