US3070150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fuel heater
Assignee: HUNTER
•
Filing: 1958-05-21
•
Granted: 1962-12-25
•
Expires: 1978-05-21
Abstract
No abstract record available.
Inventors
- 👤 Robert H Hunter
- 👤 Harris W Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:11
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/10; F23D11/101; F23D11/105
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1641581A
Cited
US1869897A
Cited
US1826776A
Cited
US1989421A
Cited
US2047570A
Cited
US2050577A
Cited
US2240161A
Cited
US2623786A
Cited
US2701608A
Cited
FR1111865A
Cited
US2857961A
Cited
US2867270A
Cited
FR1129673A
Cited
FR1157143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |