US2857133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1953-05-13
•
Granted: 1958-10-21
•
Expires: 1973-05-13
Abstract
No abstract record available.
Inventors
- 👤 Burke Edward
- 👤 George A Kemeny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:53
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/185
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2675672A
Cited
GB531445A
Cited
US2457833A
Cited
US2585871A
Cited
GB615689A
Cited
US2653446A
Cited
US2549819A
Cited
US2647368A
Cited
US2625793A
Cited
GB671228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |