Patent US4972016A successfully refreshed from Google Patents.
Patent US2724039A successfully refreshed from Google Patents.
US2724039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heater structure
Assignee: TOASTWELL Co Inc
•
Filing: 1952-05-03
•
Granted: 1955-11-15
•
Expires: 1972-05-03
Abstract
No abstract record available.
Inventors
- 👤 Paul J Mcculiough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:44
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/06; A47J37/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1102393A
Cited
US1552337A
Cited
US1836538A
Cited
US2012788A
Cited
US2194848A
Cited
US2253637A
Cited
US2503959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |