Patent US1692543A successfully refreshed from Google Patents.
Patent US3364372A successfully refreshed from Google Patents.
US3364372A
Expired / Lapsed
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Electrostatic electron lenses with telescopically adjustable tubular elements
Assignee: Teledyne UK Ltd
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Filing: 1964-07-30
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Granted: 1968-01-16
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Expires: 1984-07-30
Abstract
No abstract record available.
Inventors
- 👤 Bennett Maurice Ronald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:20
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
AN EINZEL ELECTRON LENS COMPRISING A PLURALITY OF ASSEMBLED AND MOUNTED SEPARATED OVERLAPPING TUBULAR LENS ELECTRODE OF VARYING DIAMETERS AND MOUNTING MEANS FOR SUPPORTING SAID ELECTRODES IN COARSE PREDETERMINED INTER-ELECTRODE RELATIONSHIP, ONE OF SAID ELECTRODES BEING DISPOSED IN PRECISELY DETERMINED INTER-ELECTRODE SPATIAL RELATIONSHIP WITH AT LEAST ONE FURTHER OF SAID ELECTRODES, SAID AT LEAST ONE FURTHER ELECTRODE INCLUDING TWO CONTACTING TUBULAR PARTS IN TELESCOPIC RELATIONSHIP AND HAVING A PRECISELY FIXED OVER-ALL LENGTH FINELY ADJUSTED SUBSEQUENTLY TO THE MOUNTING OF THE ELECTRODES ON SAID MOUNTING MEANS TO PROVIDE SAID PRECISELY DETERMINED INTER-ELECTRODE SPATIAL RELATIONSHIP.
Claim 2
Dependent Claim
93 words
AN EINZEL ELECTRON LENS COMPRISING A PLURALITY OF ASSEMBLED AND MOUNTED SEPARATED OVERLAPPING TUBULAR LENS ELECTRODE OF VARYING DIAMETERS AND MOUNTING MEANS FOR SUPPORTING SAID ELECTRODES IN COARSE PREDETERMINED INTER-ELECTRODE RELATIONSHIP, ONE OF SAID ELECTRODES BEING DISPOSED IN PRECISELY DETERMINED INTER-ELECTRODE SPATIAL RELATIONSHIP WITH AT LEAST ONE FURTHER OF SAID ELECTRODES, SAID AT LEAST ONE FURTHER ELECTRODE INCLUDING TWO CONTACTING TUBULAR PARTS IN TELESCOPIC RELATIONSHIP AND HAVING A PRECISELY FIXED OVER-ALL LENGTH FINELY ADJUSTED SUBSEQUENTLY TO THE MOUNTING OF THE ELECTRODES ON SAID MOUNTING MEANS TO PROVIDE SAID PRECISELY DETERMINED INTER-ELECTRODE SPATIAL RELATIONSHIP.
References Cited (Backward Citations)
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Cited
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Cited
US2720606A
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Cited
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Cited
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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) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |