US2772783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skimming device
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-07-09
•
Granted: 1956-12-04
•
Expires: 1974-07-09
Abstract
No abstract record available.
Inventors
- 👤 William C Ludi
- 👤 Christopher E Loeser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:04
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2774; Y10T137/8593; Y10T137/86236; Y10T137/8626
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2493166A
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US911314A
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US1272850A
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US1694471A
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US1723197A
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US1675755A
Cited
US2468069A
Cited
US2447425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |