US2644100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed lighting unit and method of manufacture
Assignee: Tung Sol Electric Inc
•
Filing: 1945-12-28
•
Granted: 1953-06-30
•
Expires: 1965-12-28
Abstract
No abstract record available.
Inventors
- 👤 Reginald K Braunsdorff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:23
CPC Classifications
H; H01; H01K; H01K3/00; H01K3/12; H01J; H01J5/00; H01J5/20; H01J5/22; H01J5/24; H01J2893/00; H01J2893/0033; H01J2893/0037; H01J2893/0038; H01J2893/0039; Y; Y10; Y10S; Y10S29/00; Y10S29/034
Claims Analysis
Total Claims: 0
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US2404904A
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US2324972A
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US2362172A
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US2362171A
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US2366292A
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US2398971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |