US3021834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endoscopes
Assignee: Individual
•
Filing: 1956-11-28
•
Granted: 1962-02-20
•
Expires: 1976-11-28
Abstract
No abstract record available.
Inventors
- 👤 Sheldon Edward Emanuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:10
CPC Classifications
H; H04; H04N; H04N3/00; A; A61; A61B; A61B1/00; A61B1/00163; A61B1/00165; A61B1/04; A61B1/05; G; G01; G01M; G01M3/00; G01M3/005; G01M3/38; G02; G02B; G02B23/00; G02B23/24; G02B23/26; H01; H01J; H01J31/00; H01J31/08; H01J31/26; H01J31/28; H01J31/50; H01J2231/00; H01J2231/50; H01J2231/50005; H01J2231/5001; H01J2231/50015; H01J2231/50057; H01J2231/50068
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB158149A
Cited
US1751584A
Cited
DE526643C
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US2122750A
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US2342778A
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US2324057A
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US2412659A
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US2527550A
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US2472889A
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US2520507A
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DE885770C
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US2764148A
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US2764149A
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US2747131A
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US2747132A
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US2788390A
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US2786955A
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US2825260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |