Patent US3202811A successfully refreshed from Google Patents.
Patent US2634670A successfully refreshed from Google Patents.
US2634670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater control
Assignee: Eaton Corp
•
Filing: 1949-04-22
•
Granted: 1953-04-14
•
Expires: 1969-04-22
Abstract
No abstract record available.
Inventors
- 👤 Simons Homer Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:24
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00642; B60H1/00814; B60H1/00821; B60H1/00835; B60H1/00842; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US691968A
Cited
US1710002A
Cited
US1958301A
Cited
US2325427A
Cited
US2304643A
Cited
US2418275A
Cited
US2488278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |