US2593315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control device
Assignee: Dole Valve Co
•
Filing: 1946-10-31
•
Granted: 1952-04-15
•
Expires: 1966-10-31
Abstract
No abstract record available.
Inventors
- 👤 El Roy J Kraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:40
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; G05D7/012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1097977A
Cited
US1697528A
Cited
US1885559A
Cited
US1986252A
Cited
US2009967A
Cited
US2389134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |