US3003548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fuel burner
Assignee: Crane Co
•
Filing: 1957-09-06
•
Granted: 1961-10-10
•
Expires: 1977-09-06
Abstract
No abstract record available.
Inventors
- 👤 Guy J Sanders
- 👤 Edward G Grimsal
- 👤 William E Lawrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:43
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/001; B; B05; B05B; B05B7/00; B05B7/0075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1130124A
Cited
US1676501A
Cited
US1799355A
Cited
GB377474A
Cited
CH178351A
Cited
US2132521A
Cited
US2216508A
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US2465712A
Cited
US2689001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |