US3486824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for the measurement of scale divisions including a mirror located external to an optical maser cavity
Assignee: National Research Development Corp UK
•
Filing: 1964-05-07
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Granted: 1969-12-30
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Expires: 1984-05-07
Abstract
No abstract record available.
Inventors
- 👤 Alan Hugh Cook
- 👤 William Richard Charlto Rowley
- 👤 Victor William Stanley
- 👤 David Charles Wilson
- 👤 Robert George Hitchins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:06
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/14; G01B9/00; G01B9/02; H; H01; H01S; H01S3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3220111A
Cited
US3326078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |