Patent US3551723A successfully refreshed from Google Patents.
US3551723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture which is flexible and can be coiled
Assignee: Individual
•
Filing: 1968-06-19
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Granted: 1970-12-29
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Expires: 1988-06-19
Abstract
No abstract record available.
Inventors
- 👤 Henri Popko Van Groningen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:29
CPC Classifications
F; F21; F21V; F21V29/00; F21V29/50; F21V29/70; F21V29/74; F21S; F21S4/00; F21S4/20; F21S4/22; F21S4/26; F21V19/00; F21V19/0075; F21V19/008; F21V19/0085; F21V21/00; F21V21/34; F21V21/35; F21V15/00; F21V15/01; F21V15/013
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-28 | 1974-06-29 | 1974-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-28 | 1978-06-29 | 1978-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-28 | 1982-06-29 | 1982-12-29 | $7700.00 | Window Closed / Lapsed |