US3536893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immersion heater
Assignee: VINCENT J CRANLEY
•
Filing: 1968-09-24
•
Granted: 1970-10-27
•
Expires: 1988-09-24
Abstract
No abstract record available.
Inventors
- 👤 Vincent J Cranley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:36
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/78; H05B3/80
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1027970A
Cited
US1178777A
Cited
US1690986A
Cited
US1820842A
Cited
CH179716A
Cited
US2230085A
Cited
US2297030A
Cited
US2789201A
Cited
US2785274A
Cited
US2811629A
Cited
US3440109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |