US3454331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical apparatus for use in fitting spectacles on patient
Assignee: Societe des Lunetiers Cottet Poichet Temkine and Cie
•
Filing: 1965-04-13
•
Granted: 1969-07-08
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Expires: 1985-04-13
Abstract
No abstract record available.
Inventors
- 👤 Bernard Cretin Maitenaz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:45
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/10; A61B3/11; G; G02; G02C; G02C13/00; G02C13/003; G02C13/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE625458A
Cited
US2325569A
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US2884832A
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US2803179A
Cited
FR1129603A
Cited
DE1038903B
Cited
US3205505A
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 |