Patent FR785164A successfully refreshed from Google Patents.
US2601663A
Expired / Lapsed
US
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Ship's funnel with means for raising funnel gases
Assignee: Shell Development Co
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Filing: 1949-04-05
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Granted: 1952-06-24
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Expires: 1969-04-05
Abstract
No abstract record available.
Inventors
- 👤 Lamb John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:19
CPC Classifications
B; B63; B63H; B63H21/00; B63H21/32; B63H21/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR865324A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |