US3346736A
Expired / Lapsed
US
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Electron probe apparatus having an objective lens with an aperture for restricting fluid flow
Assignee: Applied Research Laboratories Inc
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Filing: 1964-09-22
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Granted: 1967-10-10
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Expires: 1984-09-22
Abstract
No abstract record available.
Inventors
- 👤 Neuhaus Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:23
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/22; G01N23/225; H; H01; H01J; H01J37/00; H01J37/02; H01J37/18; H01J37/22; H01J37/252; H01J37/30; H01J37/3002; H01J37/3005; H01J37/301; H02; H02G; H02G1/00; H02G1/02
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) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |