Patent US2519328A successfully refreshed from Google Patents.
US2519328A
Expired / Lapsed
US
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Lamp base and ring therefor
Assignee: Westinghouse Electric Corp
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Filing: 1949-05-14
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Granted: 1950-08-15
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Expires: 1969-05-14
Abstract
No abstract record available.
Inventors
- 👤 James B Whitmore
- 👤 Louis D Morand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:42
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/42; H01K1/46; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12236; Y10T428/12243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US780613A
Cited
US2160431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |