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US2981022A
Expired / Lapsed
US
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Spectacle frames
Assignee: Optyl Holding & Co Verwaltungs KG GmbH
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Filing: 1958-10-20
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Granted: 1961-04-25
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Expires: 1978-10-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Wilhelm Anger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:18
CPC Classifications
G; G02; G02C; G02C5/00; G02C11/00; G02C11/02; Y; Y10; Y10T; Y10T29/00; Y10T29/31
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) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |