US2694792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric lamp testing apparatus
Assignee: General Electric Co
•
Filing: 1952-02-29
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Granted: 1954-11-16
•
Expires: 1972-02-29
Abstract
No abstract record available.
Inventors
- 👤 Norman E Kewley
- 👤 Edward H Lohrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:21
CPC Classifications
H; H01; H01K; H01K3/00; H01K3/30; H01K3/305; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |