US3434772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereoscopic and microscopic binocular
Assignee: RICHARD J FOGLE
•
Filing: 1966-10-10
•
Granted: 1969-03-25
•
Expires: 1986-10-10
Abstract
No abstract record available.
Inventors
- 👤 Richard J Fogle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:27
CPC Classifications
G; G02; G02B; G02B23/00; G02B21/00; G02B21/18; G02B21/20; G02B21/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US828511A
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US947971A
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US1153259A
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FR502707A
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US1497294A
Cited
CH161607A
Cited
US2463311A
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US2503342A
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US2988955A
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US3309161A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |