US3523192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for increasing the efficiency of electric generation plants
Assignee: WILLIAM J LANG
•
Filing: 1968-02-14
•
Granted: 1970-08-04
•
Expires: 1988-02-14
Abstract
No abstract record available.
Inventors
- 👤 William J Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:30
CPC Classifications
F; F02; F02C; F02C6/00; F02C6/14; F02C6/16; E; E21; E21B; E21B43/00; E21B43/28; Y; Y02; Y02E; Y02E60/00; Y02E60/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2433896A
Cited
US3151250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |