US2897252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shield and package for electron discharge device
Assignee: GTE Sylvania Inc
•
Filing: 1955-03-11
•
Granted: 1959-07-28
•
Expires: 1975-03-11
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:24
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/02; H01J5/12; B; B65; B65D; B65D21/00; B65D21/02; B65D21/0201; B65D21/0202; B65D81/00; B65D81/02; B65D85/00; B65D85/30; B65D85/42; H05; H05K; H05K9/00; H05K9/0007; H05K9/002; Y; Y10; Y10S; Y10S165/00; Y10S165/905
Claims Analysis
Total Claims: 0
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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) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |