US2986893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor recovery unit
Assignee: Devenco Inc
•
Filing: 1960-02-01
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Granted: 1961-06-06
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Expires: 1980-02-01
Abstract
No abstract record available.
Inventors
- 👤 Nikolai N Skaredoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:36
CPC Classifications
B; B01; B01D; B01D5/00; B01D5/0033; B01D5/0039; B01D5/0003; B01D5/0006; B01D5/0036; B65; B65D; B65D90/00; B65D90/22; B65D90/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |