Patent US3454332A successfully refreshed from Google Patents.
US3454332A
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US
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Corneal plastic contact lens with colored peripheral zone
Assignee: PARK CONTACT LENS COMPANY Inc 255 WEST PARK AVENUE LONG BEACH NEW YORK 11561 A CORP OF NEW YORK
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Filing: 1966-11-03
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Granted: 1969-07-08
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Expires: 1986-11-03
Abstract
No abstract record available.
Inventors
- 👤 Robert Siegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:40
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00009; B29D11/00317; B29D11/00038; B29D11/00048; B29D11/00865; B29D11/00894; B29D11/00913; G; G02; G02C; G02C7/00; G02C7/02; G02C7/04; G02C7/046
Claims Analysis
Total Claims: 0
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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) | 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 |