Patent DE2655870A1 successfully refreshed from Google Patents.
US2563345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic electric hot-water heating system
Assignee: Individual
•
Filing: 1949-12-22
•
Granted: 1951-08-07
•
Expires: 1969-12-22
Abstract
No abstract record available.
Inventors
- 👤 Daniel J Limerick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:03
CPC Classifications
F; F24; F24D; F24D3/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1370619A
Cited
US1640049A
Cited
US1654396A
Cited
US1828302A
Cited
US1820458A
Cited
US1965218A
Cited
US2421562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |