US2440478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shuttle valve
Assignee: Adel Precision Products Corp
•
Filing: 1942-11-24
•
Granted: 1948-04-27
•
Expires: 1962-11-24
Abstract
No abstract record available.
Inventors
- 👤 Ottmar A Kehle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:05
CPC Classifications
B; B64; B64C; B64C13/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2567; Y10T137/2569; Y10T137/7722; Y10T137/7837; Y10T137/7866
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1840060A
Cited
US1778757A
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US1806669A
Cited
US1768625A
Cited
GB333365A
Cited
US1955180A
Cited
US1893462A
Cited
CH211710A
Cited
US2300694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-27 | 1951-10-27 | 1952-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-27 | 1955-10-27 | 1956-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-27 | 1959-10-27 | 1960-04-27 | $7700.00 | Window Closed / Lapsed |