US2454270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basing electric bulb
Assignee: Tung Sol Lamp Works Inc
•
Filing: 1945-04-10
•
Granted: 1948-11-23
•
Expires: 1965-04-10
Abstract
No abstract record available.
Inventors
- 👤 Reginald K Braunsdorff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:03
CPC Classifications
H; H01; H01K; H01K3/00; H01K3/16; Y; Y10; Y10S; Y10S29/00; Y10S29/034
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2354642A
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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) | 1951-11-23 | 1952-05-24 | 1952-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-23 | 1956-05-24 | 1956-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-23 | 1960-05-24 | 1960-11-23 | $7700.00 | Window Closed / Lapsed |