US3545470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential-pressure flow-controlling valve mechanism
Assignee: Individual
•
Filing: 1967-07-24
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Granted: 1970-12-08
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Expires: 1987-07-24
Abstract
No abstract record available.
Inventors
- 👤 Hamilton Neil King Paton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:41
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/34; B65G53/52; B65G53/56; F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F16K11/052; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/2524; Y10T137/2559; Y10T137/2564; Y10T137/7722; Y10T137/7754; Y10T137/8593; Y10T137/86493; Y10T137/86847; Y10T137/877; Y10T137/87788; Y10T137/87812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |