US3539774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically operated kettles
Assignee: WILLIAM H B THORNTON
•
Filing: 1968-07-05
•
Granted: 1970-11-10
•
Expires: 1988-07-05
Abstract
No abstract record available.
Inventors
- 👤 William H B Thornton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:39
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/21; A47J27/21008; A47J27/21058; A47J27/21141
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1804130A
Cited
US2369932A
Cited
US2440128A
Cited
US2528191A
Cited
US2896062A
Cited
US3026402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |