US2785271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam generator
Assignee: Individual
•
Filing: 1953-10-08
•
Granted: 1957-03-12
•
Expires: 1973-10-08
Abstract
No abstract record available.
Inventors
- 👤 Hal H Baly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:46
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/42; F22B37/44; F22B37/446; F22B1/00; F22B1/28; F22B1/284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1775122A
Cited
US1866221A
Cited
US1932447A
Cited
US1995814A
Cited
US2291423A
Cited
US2277895A
Cited
US2478370A
Cited
US2627015A
Cited
US2639365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |