US2499889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for closure means
Assignee: Texaco Development Corp
•
Filing: 1945-05-30
•
Granted: 1950-03-07
•
Expires: 1965-05-30
Abstract
No abstract record available.
Inventors
- 👤 Charles F Teichmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:12
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/70; E05F15/77; Y; Y10; Y10T; Y10T292/00; Y10T292/03; Y10T70/00; Y10T70/70; Y10T70/7051; Y10T70/7062; Y10T70/7441
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2041079A
Cited
US1957509A
Cited
US2036072A
Cited
US2095688A
Cited
FR832674A
Cited
US2303688A
Cited
US2323128A
Cited
US2456233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |