US3464892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunnel oven with a series of moving barges and separate compartments
Assignee: Sunoco Inc
•
Filing: 1967-05-23
•
Granted: 1969-09-02
•
Expires: 1987-05-23
Abstract
No abstract record available.
Inventors
- 👤 John D Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:09
CPC Classifications
C; C10; C10B; C10B7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US485904A
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US1603343A
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US2899189A
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US2208705A
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US2131702A
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US2626234A
Cited
US2832725A
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US3005699A
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US2992975A
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US3020209A
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US3384569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |