US2688682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid handling and transporting apparatus
Assignee: Ethyl Corp
•
Filing: 1951-10-30
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Granted: 1954-09-07
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Expires: 1971-10-30
Abstract
No abstract record available.
Inventors
- 👤 James F Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:31
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/24; B; B01; B01J; B01J4/00; B01J4/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US964722A
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US1068643A
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US905948A
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US1126079A
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US1994838A
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US1931144A
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US2135183A
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US2577837A
Cited
US2568578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |