US3288990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panel
Assignee: K S H PLASTICS Inc
•
Filing: 1964-09-25
•
Granted: 1966-11-29
•
Expires: 1984-09-25
Abstract
No abstract record available.
Inventors
- 👤 Leo G Stahlhut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:28
CPC Classifications
F; F21; F21V; F21V3/00; C; C09; C09K; C09K11/00; C09K11/02; C09K11/025; F21V5/00; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A LIGHTING PANEL COMPRISING A TRANSPARENT PRISMATIC PLATE WITH ONE PRISMATIC SURFACE AND AN OPPOSITE SMOOTH PLANAR SURFACE AND A DIFFUSION FILM OVERLYING SAID PLANAR SURFACE, BONDED THERETO IN SPACED BONDED AREAS AND SPACED THEREFROM INTERMEDIATE SAID BOUNDED AREAS, SAID BONDED AREAS CONSTITUTING A MINOR PART OF THE TOTAL AREA OF THE PLATE OVERLAIN BY SAID FILM.
Claim 2
Dependent Claim
57 words
A LIGHTING PANEL COMPRISING A TRANSPARENT PRISMATIC PLATE WITH ONE PRISMATIC SURFACE AND AN OPPOSITE SMOOTH PLANAR SURFACE AND A DIFFUSION FILM OVERLYING SAID PLANAR SURFACE, BONDED THERETO IN SPACED BONDED AREAS AND SPACED THEREFROM INTERMEDIATE SAID BOUNDED AREAS, SAID BONDED AREAS CONSTITUTING A MINOR PART OF THE TOTAL AREA OF THE PLATE OVERLAIN BY SAID FILM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |