US3109115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetron type ionization gauges
Assignee: General Electric Co
•
Filing: 1961-10-11
•
Granted: 1963-10-29
•
Expires: 1981-10-11
Abstract
No abstract record available.
Inventors
- 👤 James M Lafferty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:26
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/02; H01J41/04; G; G01; G01L; G01L21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
AN IONIZATION GAUGE COMPRISING: AN EVACUABLE ENVELOPE; AN ION GENERATING MEANS; ION ACCELERATING AND FOCUSING MEANS; AN ELECTRON MULTIPLIER MEANS INCLUDING AN OUTPUT ELECTRODE AND AT LEAST A FIRST DYNODE; MEANS FOR MOUNTING SAID ION GENERATING MEANS, SAID ION ACCELERATING AND FOCUSING MEANS, AND SAID ELECTRON MULTIPLIER, MEANS IN SPACED RELATION AND IN THE OTHER NAMED WITHIN SAID EVACUABLE ENVELOPE. THE SAID FIRST DYNODE OF SAID ELECTRON MULTIPLIER MEANS BEING DISPOSED REMOTE FROM SAID ION GENERATING MEANS AND POSITIONED AT THE FOCAL POINT OF SAID ACCELERATED IONS.
Claim 2
Dependent Claim
87 words
AN IONIZATION GAUGE COMPRISING: AN EVACUABLE ENVELOPE; AN ION GENERATING MEANS; ION ACCELERATING AND FOCUSING MEANS; AN ELECTRON MULTIPLIER MEANS INCLUDING AN OUTPUT ELECTRODE AND AT LEAST A FIRST DYNODE; MEANS FOR MOUNTING SAID ION GENERATING MEANS, SAID ION ACCELERATING AND FOCUSING MEANS, AND SAID ELECTRON MULTIPLIER, MEANS IN SPACED RELATION AND IN THE OTHER NAMED WITHIN SAID EVACUABLE ENVELOPE. THE SAID FIRST DYNODE OF SAID ELECTRON MULTIPLIER MEANS BEING DISPOSED REMOTE FROM SAID ION GENERATING MEANS AND POSITIONED AT THE FOCAL POINT OF SAID ACCELERATED IONS.
References Cited (Backward Citations)
US2762928A
Cited
US2999157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |