US2992657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device for flowable materials
Assignee: Individual
•
Filing: 1958-06-02
•
Granted: 1961-07-18
•
Expires: 1978-06-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Albert H Weddendorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:50
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16K11/14; F16K11/18; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86815; Y10T137/86823; Y10T137/87056; Y10T137/87072; Y10T137/87249; Y10T137/87571; Y10T137/87676
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US742327A
Cited
US1865517A
Cited
US2800923A
Cited
US2818878A
Cited
US2839081A
Cited
US2845949A
Cited
US2829645A
Cited
US2847031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |