US3413056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for ophthalmic instrument for adjusting interpupillary distance and angle of convergence of lens cases
Assignee: TOKYO KOGAKUKIKAI KABUSHIKI KA
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Filing: 1965-06-30
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Granted: 1968-11-26
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Expires: 1985-06-30
Abstract
No abstract record available.
Inventors
- 👤 Ishihara Taketoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:45
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/10; A61B3/11; A61B3/111; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18024
Claims Analysis
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |