US2381501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid control valve
Assignee: John Bertran & Sons Co Ltd
•
Filing: 1943-05-07
•
Granted: 1945-08-07
•
Expires: 1963-05-07
Abstract
No abstract record available.
Inventors
- 👤 Max T Kuntzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:39
CPC Classifications
B; B66; B66D; B66D5/00; B66D5/02; B66D5/24; B66D5/26; B66D2700/00; B66D2700/03; B66D2700/035; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87169
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) | 1948-08-06 | 1949-02-05 | 1949-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-08-06 | 1953-02-05 | 1953-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-08-06 | 1957-02-05 | 1957-08-07 | $7700.00 | Window Closed / Lapsed |