Patent US670988A successfully refreshed from Google Patents.
US670988A
Expired / Lapsed
US
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Eyeglasses.
Assignee: CHARLES P YOUNG
•
Filing: 1901-02-08
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Granted: 1901-04-02
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Expires: 1921-02-08
Abstract
No abstract record available.
Inventors
- 👤 Harry Griffith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:35
CPC Classifications
G; G02; G02C; G02C5/00; G02C5/12; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/974; Y10S411/978
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1904-04-01 | 1904-10-01 | 1905-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-04-01 | 1908-10-01 | 1909-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-04-01 | 1912-10-01 | 1913-04-02 | $7700.00 | Window Closed / Lapsed |