US2561465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick heat water heater
Assignee: Individual
•
Filing: 1945-10-29
•
Granted: 1951-07-24
•
Expires: 1965-10-29
Abstract
No abstract record available.
Inventors
- 👤 John H Epling
- 👤 Eugene M Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:58
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/20; F24H1/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1185576A
Cited
US1514514A
Cited
FR575155A
Cited
US1552292A
Cited
US1621013A
Cited
GB259797A
Cited
US1719015A
Cited
US1755599A
Cited
US1805222A
Cited
US1899523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |