US3139262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precision metering valve
Assignee: Vactronic Lab Equipment Inc
•
Filing: 1961-12-12
•
Granted: 1964-06-30
•
Expires: 1981-12-12
Abstract
No abstract record available.
Inventors
- 👤 Robert A Morris
- 👤 Robert F Salat
- 👤 Kujawski Edmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:02
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191400309A
Cited
GB463518A
Cited
US2670008A
Cited
FR1077463A
Cited
US2833307A
Cited
US2929393A
Cited
US2980392A
Cited
US2928646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |