US3435596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas cleaning apparatus for coke oven batteries
Assignee: Raymond Kaiser Engineers Inc
•
Filing: 1967-06-29
•
Granted: 1969-04-01
•
Expires: 1987-06-29
Abstract
No abstract record available.
Inventors
- 👤 Klaus Hornung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:10
CPC Classifications
C; C10; C10B; C10B27/00; C10B27/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE434976C
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US1875711A
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GB350781A
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DE603498C
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US2195707A
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US2646395A
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GB842662A
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US3011966A
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US3036720A
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GB971533A
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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) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |