US3051145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sectional boilers
Assignee: Individual
•
Filing: 1959-04-17
•
Granted: 1962-08-28
•
Expires: 1979-04-17
Abstract
No abstract record available.
Inventors
- 👤 Anthony J Donohue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:28
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/48; F24H1/52; F24H1/22; F24H1/24; F24H1/30; F24H1/32; F23; F23B; F23B2700/00; F23B2700/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US641468A
Cited
US663025A
Cited
CH26838A
Cited
US1771874A
Cited
US1851453A
Cited
US2034782A
Cited
US2270440A
Cited
US2251589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |