US3195716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed getter devices, with evaporated and not evaporated gettering material, for maintaining the vacuum in electronic tubes
Assignee: Individual
•
Filing: 1961-04-13
•
Granted: 1965-07-20
•
Expires: 1981-04-13
Abstract
No abstract record available.
Inventors
- 👤 Porta Paolo Della
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:47
CPC Classifications
H; H01; H01J; H01J7/00; H01J7/14; H01J7/18; H01J7/186
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A MIXED GETTER DEVICE FOR MAINTAINING A VACUUM IN ELECTRONIC TUBES INCLUDING AN EVAPORABLE GETTERING MATERIAL AND NON-EVAPORABLE GETTERING MATERIAL, A GETTER CONTAINER MEANS HAVING A SHAPE DEFINING A CLOSED PERIPHERAL PATH FOR THE PURPOSE OF CARRYING INDUCED HIGH FREQUENCY HEATING CURRENTS, A FIRST UPSET PORTION ON SAID CONTAINER COEXTENSIVE WITH SAID PERIPHERAL PATH DEFINING A FIRST GROOVE, SAID FIRST GROOVE CONTAINING AN EVAPORABLE GETTERING MATERIAL, AND A SECOND UPSET PORTION ON SAID CONTAINER COEXTENSIVE WITH SAID FIRST UPSET PORTION AND SELECTIVELY SPACED THEREFROM DEFINING A SECOND GROOVE, SAID SECOND GROOVE CONTAINING A NON-EVAPORABLE GETTERING MATERIAL, WHEREBY SAID HIGH FREQUENCY CURRENTS IN SAID CLOSED PERIPHERAL PATH SIMULTANEOUSLY EVAPORATE AND ACTIVATE, RESPECTIVELY, SAID EVAPORABLE AND NON-EVAPORABLE GETTERING MATERIALS.
Claim 2
Dependent Claim
118 words
IN A MIXED GETTER DEVICE FOR MAINTAINING A VACUUM IN ELECTRONIC TUBES INCLUDING AN EVAPORABLE GETTERING MATERIAL AND NON-EVAPORABLE GETTERING MATERIAL, A GETTER CONTAINER MEANS HAVING A SHAPE DEFINING A CLOSED PERIPHERAL PATH FOR THE PURPOSE OF CARRYING INDUCED HIGH FREQUENCY HEATING CURRENTS, A FIRST UPSET PORTION ON SAID CONTAINER COEXTENSIVE WITH SAID PERIPHERAL PATH DEFINING A FIRST GROOVE, SAID FIRST GROOVE CONTAINING AN EVAPORABLE GETTERING MATERIAL, AND A SECOND UPSET PORTION ON SAID CONTAINER COEXTENSIVE WITH SAID FIRST UPSET PORTION AND SELECTIVELY SPACED THEREFROM DEFINING A SECOND GROOVE, SAID SECOND GROOVE CONTAINING A NON-EVAPORABLE GETTERING MATERIAL, WHEREBY SAID HIGH FREQUENCY CURRENTS IN SAID CLOSED PERIPHERAL PATH SIMULTANEOUSLY EVAPORATE AND ACTIVATE, RESPECTIVELY, SAID EVAPORABLE AND NON-EVAPORABLE GETTERING MATERIALS.
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) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |