Patent US2730260A successfully refreshed from Google Patents.
US2730260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing alloy for soft glass
Assignee: GTE Sylvania Inc
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Filing: 1952-09-26
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Granted: 1956-01-10
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Expires: 1972-09-26
Abstract
No abstract record available.
Inventors
- 👤 Harold M Mccullough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:07
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/04; C03C27/042; C03C27/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
IN AN ELECTRON DISCHARGE DEVICE HAVING A GLASS ENVELOPE AND A METALLIC MEMBER SEALED THROUGH SAID ENVELOPE IN A VACUUM TIGHT MANNER, SAID METALLIC MEMBER CONSISTING OF AN ALLOY COMPRISING APPROXIMATELY 42% NICKEL, 4 TO 8% CHROMIUM, 1 TO 3% TITANIUM AND THE BALANCE SUBSTANTIALLY ENTIRELY IRON.
Claim 2
Dependent Claim
47 words
IN AN ELECTRON DISCHARGE DEVICE HAVING A GLASS ENVELOPE AND A METALLIC MEMBER SEALED THROUGH SAID ENVELOPE IN A VACUUM TIGHT MANNER, SAID METALLIC MEMBER CONSISTING OF AN ALLOY COMPRISING APPROXIMATELY 42% NICKEL, 4 TO 8% CHROMIUM, 1 TO 3% TITANIUM AND THE BALANCE SUBSTANTIALLY ENTIRELY IRON.
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) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |