US2071749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: General Fire Extinguisher Co
•
Filing: 1936-02-20
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Granted: 1937-02-23
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Expires: 1956-02-20
Abstract
No abstract record available.
Inventors
- 👤 Ira W Knight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:27
CPC Classifications
A; A62; A62C; A62C35/00; A62C35/58; A62C35/64; A62C35/645; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7734; Y10T137/7738; Y10T137/774; Y10T137/7837; Y10T137/7879; Y10T137/7888; Y10T137/789; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913; Y10T137/7915; Y10T137/792
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) | 1940-02-23 | 1940-08-24 | 1941-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-02-23 | 1944-08-24 | 1945-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-02-23 | 1948-08-24 | 1949-02-23 | $7700.00 | Window Closed / Lapsed |