US2670008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manually adjustable valve
Assignee: Individual
•
Filing: 1950-03-16
•
Granted: 1954-02-23
•
Expires: 1970-03-16
Abstract
No abstract record available.
Inventors
- 👤 Kopp George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:09
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/524; F16K31/52408; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/615; Y10T137/794; Y10T137/8593; Y10T137/86348; Y10T137/86372; Y10T137/87917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1427027A
Cited
US1494890A
Cited
US1989721A
Cited
US2079348A
Cited
US2155761A
Cited
US2496214A
Cited
US2585431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |