Patent US3489890A successfully refreshed from Google Patents.
US3489890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent lamp holder and clip
Assignee: GTE Sylvania Inc
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Filing: 1967-09-18
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Granted: 1970-01-13
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Expires: 1987-09-18
Abstract
No abstract record available.
Inventors
- 👤 Paul E Anderson
- 👤 Glenn A Culbertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:28
CPC Classifications
F; F21; F21V; F21V19/00; F21V19/0075; F21V19/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2403240A
Cited
US2513832A
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US2765397A
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US3138418A
Cited
US3297977A
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US3397376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |