US3520450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluids dispensing valve
Assignee: Dart Industries Inc
•
Filing: 1968-06-06
•
Granted: 1970-07-14
•
Expires: 1988-06-06
Abstract
No abstract record available.
Inventors
- 👤 Samuel B Prussin
- 👤 Jimmie L Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:09
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/34; B65D83/44; B65D83/46; B65D83/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3241722A
Cited
US3187963A
Cited
US3341082A
Cited
US3325056A
Cited
US3416711A
Cited
US3454198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |