Patent US4846152A successfully refreshed from Google Patents.
Patent US2840679A successfully refreshed from Google Patents.
US2840679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control for surface heating element
Assignee: Moffats Ltd
•
Filing: 1955-12-23
•
Granted: 1958-06-24
•
Expires: 1975-12-23
Abstract
No abstract record available.
Inventors
- 👤 Hart Thomas Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:34
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/2451; G05D23/2453
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1663810A
Cited
US2031919A
Cited
US2099687A
Cited
US2556065A
Cited
US2667560A
Cited
US2727129A
Cited
US2757869A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |