US3420599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable binocular worn as glasses
Assignee: Individual
•
Filing: 1965-10-19
•
Granted: 1969-01-07
•
Expires: 1985-10-19
Abstract
No abstract record available.
Inventors
- 👤 Dolph G Frantz
- 👤 William Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:34
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/02; G02C7/08; G02C7/088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US565596A
Cited
US624369A
Cited
US1179787A
Cited
US1795425A
Cited
US1986688A
Cited
US2642776A
Cited
FR1316033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |