US3389299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent lighting system
Assignee: KEGAN KEGAN AND BERKMAN
•
Filing: 1966-11-07
•
Granted: 1968-06-18
•
Expires: 1986-11-07
Abstract
No abstract record available.
Inventors
- 👤 Bell Ronald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:33
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/26; H05B41/28; H05B41/282; H05B41/2821; Y; Y10; Y10S; Y10S315/00; Y10S315/02; Y10S315/04; Y10S315/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2964676A
Cited
US3247422A
Cited
US3159799A
Cited
US3210654A
Cited
US3275884A
Cited
US3130347A
Cited
US3247466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |