US3444048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous coking apparatus
Assignee: Bergwerksverband GmbH
•
Filing: 1967-01-19
•
Granted: 1969-05-13
•
Expires: 1987-01-19
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Schmeling
- 👤 Werner Peters
- 👤 Kurt Kleisa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:43
CPC Classifications
C; C10; C10B; C10B49/00; C10B49/16; C10B49/20; C10B49/22; C10B53/00; C10B53/08; F; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2131702A
Cited
US2480670A
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DE1135419B
Cited
US2741549A
Cited
US2743216A
Cited
US2984602A
Cited
US2879208A
Cited
US3140240A
Cited
US3117064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |