US3454776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for determining the positions of indicia utilizing an oscillating light beam and detecting an odd harmonic in the output
Assignee: Ernst Leitz Wetzlar GmbH
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Filing: 1965-05-19
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Granted: 1969-07-08
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Expires: 1985-05-19
Abstract
No abstract record available.
Inventors
- 👤 Fromund Hock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:38
CPC Classifications
G; G01; G01D; G01D18/00; G01B; G01B11/00; G01C; G01C1/00; G01C1/02; G01C1/06; G01D13/00; G01D13/02; G01D5/00; G01D5/26; G01R; G01R25/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3012148A
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US3017552A
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US3100846A
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US3209152A
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US3297879A
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US3335281A
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US3360655A
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US3317739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |