US2479042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water heater
Assignee: Individual
•
Filing: 1943-06-09
•
Granted: 1949-08-16
•
Expires: 1963-06-09
Abstract
No abstract record available.
Inventors
- 👤 Richard I Gaines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:02
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/20; F24H1/205; F24H1/206; Y; Y10; Y10S; Y10S165/00; Y10S165/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US368332A
Cited
US1195260A
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US717214A
Cited
US1494499A
Cited
US1706416A
Cited
US1529871A
Cited
US1735945A
Cited
US1852154A
Cited
US1910711A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-15 | 1953-02-14 | 1953-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-15 | 1957-02-14 | 1957-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-15 | 1961-02-14 | 1961-08-16 | $7700.00 | Window Closed / Lapsed |