Patent US3402914A successfully refreshed from Google Patents.
US3402914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling the permeability of a porous material, and turbine blade formed thereby
Assignee: Curtiss Wright Corp
•
Filing: 1965-02-10
•
Granted: 1968-09-24
•
Expires: 1985-02-10
Abstract
No abstract record available.
Inventors
- 👤 Donald J Kump
- 👤 Norman F Lauziere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:58
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/182; F01D5/183; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A TRANSPIRATION COOLED BLADE FOR USE IN AN ENVIRONMENT WHEREIN PORTIONS OF SAID BLADE ARE SUBJECTED TO
Claim 2
Dependent Claim
17 words
A TRANSPIRATION COOLED BLADE FOR USE IN AN ENVIRONMENT WHEREIN PORTIONS OF SAID BLADE ARE SUBJECTED TO
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |