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Patent US2545651A successfully refreshed from Google Patents.
US2545651A
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US
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Fractionating tower bubble cap tray
Assignee: Sunoco Inc
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Filing: 1946-11-09
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Granted: 1951-03-20
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Expires: 1966-11-09
Abstract
No abstract record available.
Inventors
- 👤 Leland W T Cummings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:08
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/18; B01D3/32; B01D3/324; B01D3/326
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US381803A
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US518941A
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US1686542A
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US1770658A
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US1753429A
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US2241370A
Cited
US2237680A
Cited
US2241114A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |