US2758239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Getter and method of making same
Assignee: Varian Medical Systems Inc
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Filing: 1952-09-13
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Granted: 1956-08-07
•
Expires: 1972-09-13
Abstract
No abstract record available.
Inventors
- 👤 Robert C Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:05
CPC Classifications
H; H01; H01J; H01J7/00; H01J7/14; H01J7/18; H01J7/186
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
144 words
A GETTER FOR USE IN VACUUM DEVICES COMPRISING A FLASHING GETTER MATERIAL COATED ON A STRIP OF SOLID MATERIAL AND A SHEET OF SOLID, NONRUPTURABLE MATERIAL, SAID STRIP OF COATED MATERIAL BEING WITHIN SAID SHEET WITH ONE EDGE OF SAID SHEET FOLDED OVER THE STRIP AND THE OPPOSITE EDGE FOLDED OVER THE TOP OF SAID FIRST FOLD WHEREBY A TIGHTLY CLOSED, OVERLAPPING SEAM IS PROVIDED, THE ENDS OF FLASHING FOLDED SHEET BEING SEALED CLOSED WHEREBY SAID FLASHING GETTER MATERIAL IS COMPLETELY ENVELOPED, SAID FOLDED SHEET BEING VENT IN A CURVE SO THAT THE OVERLAPPING SEAM IS ON THE OUTER SIDE OF THE BEND, SAID ENVELOPING SHEET THEREBY BEING AIRTIGHT EXCEPT FOR SAID TIGHTLY CLOSED SEAM SO THAT ALL RESIDUES WITHIN THE ENVELOPED ARE RETAINED AFTER FLASHING EXCEPT CONSTITUENTS OF THE FLASHING GETTER MATERIAL IN THE VAPOR OR GASEOUS STAE WHICH ESCAPE THROUGH SAID SEAM.
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) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |