US3511984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture
Assignee: GTE Sylvania Inc
•
Filing: 1967-12-27
•
Granted: 1970-05-12
•
Expires: 1987-12-27
Abstract
No abstract record available.
Inventors
- 👤 Ronald G Blaisdell
- 👤 Hendrik A J De Vos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:36
CPC Classifications
F; F21; F21V; F21V19/00; F21V19/02; F21S; F21S8/00; F21S8/04; F21S8/06; F21V17/00; F21V17/10; F21V17/18; F21V23/00; F21V23/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE279688C
Cited
US3284624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |