Patent US2386122A successfully refreshed from Google Patents.
US2386122A
Expired / Lapsed
US
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Injector for conduits
Assignee: Shell Development Co
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Filing: 1944-09-04
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Granted: 1945-10-02
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Expires: 1964-09-04
Abstract
No abstract record available.
Inventors
- 👤 Klingen Leendert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:10
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/12; B; B01; B01F; B01F25/00; B01F25/30; B01F25/31; B01F25/314
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) | 1948-10-01 | 1949-04-02 | 1949-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-10-01 | 1953-04-02 | 1953-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-10-01 | 1957-04-02 | 1957-10-02 | $7700.00 | Window Closed / Lapsed |