US2861163A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating element
Assignee: Antioch College
•
Filing: 1956-07-11
•
Granted: 1958-11-18
•
Expires: 1976-07-11
Abstract
No abstract record available.
Inventors
- 👤 Asakawa George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:52
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/10; H05B3/12; H05B3/14; H05B3/146; H05B3/40; H05B3/54; H05B3/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2412701A
Cited
US2322773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |