US3384338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable orifice device
Assignee: Boeing North American Inc
•
Filing: 1965-04-06
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Granted: 1968-05-21
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Expires: 1985-04-06
Abstract
No abstract record available.
Inventors
- 👤 Dennis J Dermody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:53
CPC Classifications
F; F16; F16K; F16K47/00; F16K47/04; F16K47/06; F15; F15B; F15B11/00; F15B11/02; F15B11/04; F15B13/00; F15B2013/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US401576A
Cited
US1966294A
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US2409638A
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US2516825A
Cited
US2852056A
Cited
US3263726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |