US2698730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire extinguisher valve operable by back pressure
Assignee: CO Two Fire Equipment Co
•
Filing: 1951-06-13
•
Granted: 1955-01-04
•
Expires: 1971-06-13
Abstract
No abstract record available.
Inventors
- 👤 Ensminger Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:31
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/363
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US941153A
Cited
US1373599A
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US1406026A
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US1581546A
Cited
US2115383A
Cited
US2010129A
Cited
US2373654A
Cited
US2555483A
Cited
US2624365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |