US3468342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid control devices
Assignee: British Telecommunications Research Ltd
•
Filing: 1965-10-18
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Granted: 1969-09-23
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Expires: 1985-10-18
Abstract
No abstract record available.
Inventors
- 👤 David John Craft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:27
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02; F16K7/04; F16K7/06; F15; F15B; F15B13/00; F15C; F15C1/00; F15C1/02; F15C1/04; F15C3/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/8663; Y10T137/87169; Y10T137/87217; Y10T137/87225; Y10T137/87249
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1284465A
Cited
CH208807A
Cited
FR1014043A
Cited
US2624364A
Cited
US3018793A
Cited
US3316935A
Cited
US3318329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |