US2552336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-way valve
Assignee: Dill Manufacturing Co
•
Filing: 1948-05-05
•
Granted: 1951-05-08
•
Expires: 1968-05-05
Abstract
No abstract record available.
Inventors
- 👤 James H Marcum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:40
CPC Classifications
B; B60; B60C; B60C29/00; B60C29/007; B60C15/00; B60C15/02; B60C15/028; B60C15/032; Y; Y10; Y10S; Y10S152/00; Y10S152/09; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/87016; Y10T137/8704; Y10T137/87917; Y10T137/88054
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |