Patent US3179833A successfully refreshed from Google Patents.
US3179833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal storage tubes
Assignee: Teledyne UK Ltd
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Filing: 1961-02-21
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Granted: 1965-04-20
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Expires: 1981-02-21
Abstract
No abstract record available.
Inventors
- 👤 Callick Eric Brian Butler
- 👤 Firmin Jervois Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:14
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A SIGNAL STORAGE TUBE HAVING A WRITING GUN; A STORAGE ELECTRODES; A FLOOD ELECTRON GUN POSITIONED BETWEEN THE WRITING GUN AND THE STORAGE ELECTRODE, SAID FLOOD ELECTRON GUN BEING DIFFERENT IN AREA FROM THE STORAGE ELECTRODE AND INCLUDING A GRID OR MESH CATHODE OF ELECTRON EMISSIVE MATERIAL EMITTING THE ELECTRONS FORMING THE FLOOD BEAM AND SO FORMED AS TO ALLOW PASSAGE THERETHROUGH FOR THE ELECTRON BEAM FROM SAID WRITING GUN; AND MEANS FOR IMMERSING THE VOLUME BETWEEN THE FLOOD ELECTRON GUN AND THE STORAGE ELECTRODE IN A MAGETIC COLLIMATING FIELD, THE FLUX DENSITY OF SAID MAGNETIC FIELD AT THE FLOOD ELECTRON GUN AND AT THE STORAGE ELECTRODE BEING INVERSELY PROPORTIONAL TO THE AREA OF THE FLOOD ELECTRON GUN AND OF THE STORAGE ELECTRODE, RESPECTIVELY.
Claim 2
Dependent Claim
124 words
A SIGNAL STORAGE TUBE HAVING A WRITING GUN; A STORAGE ELECTRODES; A FLOOD ELECTRON GUN POSITIONED BETWEEN THE WRITING GUN AND THE STORAGE ELECTRODE, SAID FLOOD ELECTRON GUN BEING DIFFERENT IN AREA FROM THE STORAGE ELECTRODE AND INCLUDING A GRID OR MESH CATHODE OF ELECTRON EMISSIVE MATERIAL EMITTING THE ELECTRONS FORMING THE FLOOD BEAM AND SO FORMED AS TO ALLOW PASSAGE THERETHROUGH FOR THE ELECTRON BEAM FROM SAID WRITING GUN; AND MEANS FOR IMMERSING THE VOLUME BETWEEN THE FLOOD ELECTRON GUN AND THE STORAGE ELECTRODE IN A MAGETIC COLLIMATING FIELD, THE FLUX DENSITY OF SAID MAGNETIC FIELD AT THE FLOOD ELECTRON GUN AND AT THE STORAGE ELECTRODE BEING INVERSELY PROPORTIONAL TO THE AREA OF THE FLOOD ELECTRON GUN AND OF THE STORAGE ELECTRODE, RESPECTIVELY.
References Cited (Backward Citations)
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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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |