Patent US2902830A successfully refreshed from Google Patents.
US2902830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam power plants
Assignee: Individual
•
Filing: 1956-06-28
•
Granted: 1959-09-08
•
Expires: 1976-06-28
Abstract
No abstract record available.
Inventors
- 👤 Lenz William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:05
CPC Classifications
F; F01; F01K; F01K3/00; F01K3/18; F01K3/20; F01K3/205; F01K7/00; F01K7/16; F01K7/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB220960A
Cited
GB246593A
Cited
US1723302A
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US1782220A
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US1965427A
Cited
US2158856A
Cited
US2653447A
Cited
US2595822A
Cited
US2593963A
Cited
US2644308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |