US1443675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: —
•
Filing: —
•
Granted: 1923-01-30
•
Expires: 1940-01-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:33
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/10; F04B39/102; Y; Y10; Y10S; Y10S137/00; Y10S137/903; Y10S251/00; Y10S251/903; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86759; Y10T137/86791
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) | 1926-01-29 | 1926-07-31 | 1927-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-01-29 | 1930-07-31 | 1931-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-01-29 | 1934-07-31 | 1935-01-30 | $7700.00 | Window Closed / Lapsed |