US3159200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fuel burner
Assignee: Shell USA Inc
•
Filing: 1962-01-30
•
Granted: 1964-12-01
•
Expires: 1982-01-30
Abstract
No abstract record available.
Inventors
- 👤 Wilhelmus C Schuling
- 👤 Verkoren Henri
- 👤 Hendrik J Koster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:14
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1754603A
Cited
US1879916A
Cited
US2474313A
Cited
US2547735A
Cited
US2855033A
Cited
US3033273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |