Patent US2279688A successfully refreshed from Google Patents.
US2279688A
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US
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Corrosion preventive
Assignee: Shell Development Co
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Filing: 1940-12-24
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Granted: 1942-04-14
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Expires: 1960-12-24
Abstract
No abstract record available.
Inventors
- 👤 Robert G Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:22
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/12; C23F11/124; C23F11/126; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L10/00; C10L10/06; C10M; C10M131/00; C10M131/08; C10M131/12; C10M135/00; C10M135/02; H; H04; H04B; H04B3/00; H04B3/02; H04B3/04; H04B3/10; C10L1/182; C10L1/1822; C10L1/1824; C10L1/185; C10L1/1852; C10L1/188; C10L1/1881; C10L1/20; C10L1/205; C10L1/22; C10L1/222; C10L1/224; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/025; C10M2207/026; C10M2207/04; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/40; C10M2207/404; C10M2211/00; C10M2211/04; C10M2211/044; C10M2211/06; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/08; C10M2219/082; C10M2219/085; C10N; C10N2040/00; C10N2040/12; C10N2040/13; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/20; C10N2040/22; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2070/00; C10N2070/02; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
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) | 1945-04-13 | 1945-10-13 | 1946-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-04-13 | 1949-10-13 | 1950-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-04-13 | 1953-10-13 | 1954-04-14 | $7700.00 | Window Closed / Lapsed |