US3049738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coke oven ascension pipe decarbonising device
Assignee: Woodall Duckham Construction Co Ltd
•
Filing: 1959-06-30
•
Granted: 1962-08-21
•
Expires: 1979-06-30
Abstract
No abstract record available.
Inventors
- 👤 Randell Geoffrey Edwar Charles
- 👤 Whitworth Herbert Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:49
CPC Classifications
C; C10; C10B; C10B43/00; C10B43/02; C10B43/04; C10B43/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1413928A
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US1058091A
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US1014333A
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US1370767A
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GB358330A
Cited
US1864027A
Cited
DE657981C
Cited
US2213533A
Cited
US2283521A
Cited
US2244586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |