Patent US3441350A successfully refreshed from Google Patents.
US3441350A
Expired / Lapsed
US
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Positioning device for the absolute digital determination of measuring values
Assignee: Carl Zeiss AG
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Filing: 1966-01-11
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Granted: 1969-04-29
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Expires: 1986-01-11
Abstract
No abstract record available.
Inventors
- 👤 Kurt Rantsch
- 👤 Otto Trotscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:45
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/26; G01D5/32; G01D5/34; G01D5/347; G01D5/34776; G01D5/34792; H; H03; H03M; H03M1/00; H03M1/12; H03M1/22; H03M1/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2781171A
Cited
US2880512A
Cited
US3077815A
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US3037420A
Cited
US2957104A
Cited
US3230827A
Cited
US3285123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |