Patent US2670873A successfully refreshed from Google Patents.
US2670873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety equipment for fuel tanks
Assignee: Individual
•
Filing: 1949-11-02
•
Granted: 1954-03-02
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Expires: 1969-11-02
Abstract
No abstract record available.
Inventors
- 👤 Theron D Whidden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:22
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/22; B65D90/38; B65D90/44
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |