US2717580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indirect horizontal flue boiler
Assignee: Cameron Solutions Inc
•
Filing: 1951-04-07
•
Granted: 1955-09-13
•
Expires: 1971-04-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Maher
- 👤 Charles A Lavery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:53
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/02; F22B1/16; F22B1/167
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190313422A
Cited
US1734310A
Cited
US1882809A
Cited
US1980424A
Cited
US2201786A
Cited
US2354932A
Cited
US2338368A
Cited
US2582134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |