US2963539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulator assembly for electric resistance heater
Assignee: HYNES ELECTRIC HEATING Co
•
Filing: 1958-02-28
•
Granted: 1960-12-06
•
Expires: 1978-02-28
Abstract
No abstract record available.
Inventors
- 👤 Lee P Hynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:12
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/62; H05B3/66
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US921134A
Cited
US1077676A
Cited
US1079895A
Cited
GB191401055A
Cited
US1677313A
Cited
US1680404A
Cited
US1883927A
Cited
US2128058A
Cited
DE893531C
Cited
US2473264A
Cited
US2536747A
Cited
US2627099A
Cited
GB708535A
Cited
US2750487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |