US2678133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Sunoco Inc
•
Filing: 1950-11-17
•
Granted: 1954-05-11
•
Expires: 1970-11-17
Abstract
No abstract record available.
Inventors
- 👤 Clarence H Thayer
- 👤 Nelson F King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:59
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/06; B01D33/073; B01D33/44; B01D33/46; B01D33/466; B01D33/70; B01D33/72; B01D33/727; B01D2201/00; B01D2201/28; B01D2201/287
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1312316A
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US660214A
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US802922A
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US1107485A
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US1219796A
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US1682757A
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GB320371A
Cited
US1858574A
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US1987142A
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US2173060A
Cited
US2442234A
Cited
US2596384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |