Patent US3495897A successfully refreshed from Google Patents.
US3495897A
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US
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Device for measuring the pupillary distance
Assignee: Lunetiers Temkine & Cie soc
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Filing: 1967-07-27
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Granted: 1970-02-17
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Expires: 1987-07-27
Abstract
No abstract record available.
Inventors
- 👤 Jean Deforges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:19
CPC Classifications
G; G02; G02C; G02C13/00; G02C13/003; G02C13/005; A; A61; A61B; A61B3/00; A61B3/10; A61B3/11; A61B3/111
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE238178C
Cited
US1935175A
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US2159277A
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US2022202A
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US2355161A
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US3115713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |