Patent US2423488A successfully refreshed from Google Patents.
US2423488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric tank water heater
Assignee: GEO P DOWE Co Ltd
•
Filing: 1945-07-16
•
Granted: 1947-07-08
•
Expires: 1965-07-16
Abstract
No abstract record available.
Inventors
- 👤 George P Dowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:46
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/18; F24H9/1809; F24H9/1818
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-07 | 1951-01-06 | 1951-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-07 | 1955-01-06 | 1955-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-07 | 1959-01-06 | 1959-07-08 | $7700.00 | Window Closed / Lapsed |