Patent US3416852A successfully refreshed from Google Patents.
US3416852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Functionally combined microscope and carrying case
Assignee: AC Gilbert Co
•
Filing: 1964-05-18
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Granted: 1968-12-17
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Expires: 1984-05-18
Abstract
No abstract record available.
Inventors
- 👤 Bernard H Goldbeck
- 👤 Jr William L Effinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:07
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2040066A
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US2184750A
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US2214367A
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US2551780A
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US2718447A
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GB819900A
Cited
US3019486A
Cited
US3186574A
Cited
US3307896A
Cited
US3324997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |