Patent US3025950A successfully refreshed from Google Patents.
US3025950A
Expired / Lapsed
US
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Holder for contact lenses
Assignee: OPTICASE Co
•
Filing: 1960-07-22
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Granted: 1962-03-20
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Expires: 1980-07-22
Abstract
No abstract record available.
Inventors
- 👤 Nathan Emanuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:00
CPC Classifications
A; A45; A45C; A45C11/00; A45C11/005; Y; Y10; Y10S; Y10S134/00; Y10S134/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US625138A
Cited
US1848109A
Cited
GB657316A
Cited
US2642987A
Cited
US2687157A
Cited
US2948387A
Cited
US2932383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |