US3399295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatically controlled electric immersion heater units
Assignee: KEM KREST PRODUCTS CO
•
Filing: 1965-10-20
•
Granted: 1968-08-27
•
Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 Gabriel A Chaustowich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:27
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0213
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1416482A
Cited
US1837000A
Cited
US2192655A
Cited
US2448669A
Cited
US2437262A
Cited
US2750487A
Cited
US2789201A
Cited
US2792474A
Cited
US3171015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |