Patent US3433887A successfully refreshed from Google Patents.
US3433887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture with quickly removable ballast assembly
Assignee: Thomas Industries Inc
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Filing: 1966-06-06
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Granted: 1969-03-18
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Expires: 1986-06-06
Abstract
No abstract record available.
Inventors
- 👤 Thomas Driskell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:08
CPC Classifications
F; F21; F21V; F21V23/00; F21V23/02; Y; Y10; Y10S; Y10S174/00; Y10S174/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3275922A
Cited
US3335270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |