US3254227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for photoelectrically measuring the position of a scale marker
Assignee: Ernst Leitz Wetzlar GmbH
•
Filing: 1962-08-27
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Granted: 1966-05-31
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Expires: 1982-08-27
Abstract
No abstract record available.
Inventors
- 👤 Hock Fromund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:45
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/26; G01D5/32; G01D5/34; G01D5/36; G01D5/38; G01B; G01B11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2393631A
Cited
US2924768A
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US3037156A
Cited
US3079507A
Cited
US3033987A
Cited
US3116886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |