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US3436151A
Expired / Lapsed
US
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Spectacle mounted infinity sight for an athlete
Assignee: CHARLES W CONROSE SR
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Filing: 1964-06-24
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Granted: 1969-04-01
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Expires: 1984-06-24
Abstract
No abstract record available.
Inventors
- 👤 Charles W Conrose Sr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:51
CPC Classifications
G; G02; G02C; G02C5/00; G02C5/001; G02C7/00; G02C7/14
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) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |