US1604980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic hot-water heater
Assignee: CHARLES A DENIS
•
Filing: 1924-04-29
•
Granted: 1926-11-02
•
Expires: 1944-04-29
Abstract
No abstract record available.
Inventors
- 👤 Manuel D Dominguez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:27
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F24H9/2007; F24H9/2014; F24H9/2021
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1929-11-01 | 1930-05-03 | 1930-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-11-01 | 1934-05-03 | 1934-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-11-01 | 1938-05-03 | 1938-11-02 | $7700.00 | Window Closed / Lapsed |