Patent US3536385A successfully refreshed from Google Patents.
US3536385A
Expired / Lapsed
US
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Spectacle-mounted eyeshade
Assignee: WILLIAM V JOHNSTON
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Filing: 1969-10-16
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Granted: 1970-10-27
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Expires: 1989-10-16
Abstract
No abstract record available.
Inventors
- 👤 William V Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:44
CPC Classifications
G; G02; G02C; G02C9/00; G02C9/02; G02C11/00; G02C11/12; G02C9/04
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) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |