US2473560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unit water heater
Assignee: Individual
•
Filing: 1946-08-29
•
Granted: 1949-06-21
•
Expires: 1966-08-29
Abstract
No abstract record available.
Inventors
- 👤 Edward S Bagley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:47
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/10; F24H1/12; F24H1/14; F24H1/142
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US696599A
Cited
US745682A
Cited
US927755A
Cited
US1817366A
Cited
US1899839A
Cited
US2037993A
Cited
US2307924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |