US2637521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine rotor and method of welding rotor disks together
Assignee: Elliott Co
•
Filing: 1949-03-01
•
Granted: 1953-05-05
•
Expires: 1969-03-01
Abstract
No abstract record available.
Inventors
- 👤 Leonard R Constantine
- 👤 Jr Charles T Evans
- 👤 Edward S Dennison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:54
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/06; F01D5/063; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/4932
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |