US2916256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor construction for compressors and turbines
Assignee: RTX Corp
•
Filing: 1955-09-21
•
Granted: 1959-12-08
•
Expires: 1975-09-21
Abstract
No abstract record available.
Inventors
- 👤 Richard D Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:01
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/06; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1021222A
Cited
DE887689C
Cited
US2711074A
Cited
US2654565A
Cited
FR960069A
Cited
GB644481A
Cited
US2662685A
Cited
US2773667A
Cited
US2675174A
Cited
US2689682A
Cited
US2772853A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |