US2621901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for heating and storing water
Assignee: Individual
•
Filing: 1948-09-29
•
Granted: 1952-12-16
•
Expires: 1968-09-29
Abstract
No abstract record available.
Inventors
- 👤 Wheeler Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:08
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/12; F24H9/13; F24H9/133; F28; F28D; F28D20/00; F28D20/0034; F28D20/0039; F28D2020/0065; F28D2020/0069; Y; Y02; Y02E; Y02E60/00; Y02E60/14; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86292; Y10T137/8634
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US657521A
Cited
US1068742A
Cited
US1779165A
Cited
US2066190A
Cited
US2067495A
Cited
US2073236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |