US2623153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric water heater
Assignee: Individual
•
Filing: 1950-11-04
•
Granted: 1952-12-23
•
Expires: 1970-11-04
Abstract
No abstract record available.
Inventors
- 👤 David M Mcginnis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:43
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/28; F22B1/284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1456863A
Cited
US1775122A
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US1682448A
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US1781057A
Cited
US1866221A
Cited
US1965218A
Cited
US2098912A
Cited
US2133838A
Cited
US2244131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |