US2386949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid heater
Assignee: Individual
•
Filing: 1943-11-09
•
Granted: 1945-10-16
•
Expires: 1963-11-09
Abstract
No abstract record available.
Inventors
- 👤 Henry W Hayward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:10
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/20; F24H1/201; F24H1/202; F24H15/00; F24H15/30; F24H15/355; F24H15/36; F24H15/37; F24H9/00; F24H9/20; F24H9/2007; F24H9/2014; F24H9/2021; F24H9/2035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-10-15 | 1949-04-16 | 1949-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-10-15 | 1953-04-16 | 1953-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-10-15 | 1957-04-16 | 1957-10-16 | $7700.00 | Window Closed / Lapsed |