US2369104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flush valve
Assignee: Crane Co
•
Filing: 1943-02-05
•
Granted: 1945-02-06
•
Expires: 1963-02-05
Abstract
No abstract record available.
Inventors
- 👤 Edward A Fredrickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:35
CPC Classifications
E; E03; E03D; E03D3/00; E03D3/02; E03D3/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/86936; Y10T137/86944
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) | 1948-02-06 | 1948-08-07 | 1949-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-02-06 | 1952-08-07 | 1953-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-02-06 | 1956-08-07 | 1957-02-06 | $7700.00 | Window Closed / Lapsed |