Patent US5068602A successfully refreshed from Google Patents.
Patent US2404869A successfully refreshed from Google Patents.
US2404869A
Expired / Lapsed
US
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Vacuum pumping system
Assignee: OCEANIC TANK PROC CORP
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Filing: 1945-05-10
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Granted: 1946-07-30
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Expires: 1965-05-10
Abstract
No abstract record available.
Inventors
- 👤 Sorrentino Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:52
CPC Classifications
B; B63; B63B; B63B57/00; F; F04; F04F; F04F3/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86083; Y10T137/87249; Y10T137/877
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-07-29 | 1950-01-28 | 1950-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-29 | 1954-01-28 | 1954-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-29 | 1958-01-28 | 1958-07-30 | $7700.00 | Window Closed / Lapsed |