Patent US2385037A successfully refreshed from Google Patents.
Patent US2664908A successfully refreshed from Google Patents.
US2664908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unloading valve
Assignee: Link Belt Speeder Corp
•
Filing: 1950-06-21
•
Granted: 1954-01-05
•
Expires: 1970-06-21
Abstract
No abstract record available.
Inventors
- 👤 Frank J Strnad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:52
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/027; G; G05; G05D; G05D16/00; G05D16/024; G05D16/14; G05D16/16; G05D16/166; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2622; Y10T137/2625
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2316445A
Cited
GB589644A
Cited
US2447820A
Cited
US2545712A
Cited
US2474122A
Cited
US2513681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |