US2469253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sectional boiler
Assignee: Individual
•
Filing: 1946-04-15
•
Granted: 1949-05-03
•
Expires: 1966-04-15
Abstract
No abstract record available.
Inventors
- 👤 Achey Norwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:16
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/14; F24H1/00; F24H1/22; F24H1/24; F24H1/30; F24H1/32; F24H1/38; F24H9/0005; F24H9/001; F24H9/0015; F24H9/0026; F24H9/0094; F24H9/12; F24H9/13; F24H9/146; F23; F23B; F23B2700/00; F23B2700/01; F24H2230/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US436680A
Cited
US1062147A
Cited
US1383179A
Cited
US1687784A
Cited
US1699832A
Cited
US1797756A
Cited
US2125795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-02 | 1952-11-01 | 1953-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-02 | 1956-11-01 | 1957-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-02 | 1960-11-01 | 1961-05-03 | $7700.00 | Window Closed / Lapsed |