US2498644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a metal to glass seal
Assignee: International Standard Electric Corp
•
Filing: 1946-08-02
•
Granted: 1950-02-28
•
Expires: 1966-08-02
Abstract
No abstract record available.
Inventors
- 👤 Billings William Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:30
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/32; H01J5/40; H01J5/42; H01J2893/00; H01J2893/0033; H01J2893/0034; Y; Y10; Y10S; Y10S228/00; Y10S228/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1653380A
Cited
US2103759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |