US2919858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control device
Assignee: Baso Inc
•
Filing: 1955-06-20
•
Granted: 1960-01-05
•
Expires: 1975-06-20
Abstract
No abstract record available.
Inventors
- 👤 Russell B Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:32
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/10; F23N5/105; F23N2225/00; F23N2225/08; F23N2225/12; F23N2229/00; F23N2229/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2377517A
Cited
US1849163A
Cited
US1845999A
Cited
US1932269A
Cited
US2224705A
Cited
US2317639A
Cited
US2396205A
Cited
US2329682A
Cited
US2495226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |