Patent US1571350A successfully refreshed from Google Patents.
Patent US2773169A successfully refreshed from Google Patents.
US2773169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding of bladed rotors for turbines, compressors, etc.
Assignee: Power Jets Research and Development Ltd
•
Filing: 1952-02-18
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Granted: 1956-12-04
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Expires: 1972-02-18
Abstract
No abstract record available.
Inventors
- 👤 Lees George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:33
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/002; F; F01; F01D; F01D5/00; F01D5/30; F01D5/3023; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/4932; Y10T29/49321
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) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |