US2422628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass to metal seal
Assignee: GTE Sylvania Inc
•
Filing: 1943-06-12
•
Granted: 1947-06-17
•
Expires: 1963-06-12
Abstract
No abstract record available.
Inventors
- 👤 Henry J Mccarthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:37
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/04; C03C27/042; C03C27/044; Y; Y10; Y10S; Y10S228/00; Y10S228/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2151972A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-16 | 1950-12-16 | 1951-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-16 | 1954-12-16 | 1955-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-16 | 1958-12-16 | 1959-06-17 | $7700.00 | Window Closed / Lapsed |