Patent US3413850A successfully refreshed from Google Patents.
US3413850A
Expired / Lapsed
US
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Means for determining the velocity of a luminescent gas stream
Assignee: McDonnell Douglas Corp
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Filing: 1966-05-06
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Granted: 1968-12-03
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Expires: 1986-05-06
Abstract
No abstract record available.
Inventors
- 👤 Samuel E Merrifield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:14
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/18; G01P5/20; G01F; G01F1/00; G01F1/66; G01F1/661
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |