Patent US3104834A successfully refreshed from Google Patents.
US3104834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic grid
Assignee: —
•
Filing: —
•
Granted: 1963-09-24
•
Expires: 1980-09-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:07
CPC Classifications
F; F21; F21V; F21V11/00; F21V11/06; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
151 words
A CELLULAR GRID HAVING MEANS FOR CONTROLLING THE APPARENT BRIGHTNESS THEREOF AS VIEWED FROM THE SIDE OF THE GRID REMOTE FROM A LIGHT SOURCE, SAID GRID COMPRISING: CELL WALLS BEING OF LATTICE TYPE AND DEFINING CELLS EXTENDING ENTIRELY THROUGH THE GRID AND OPENING AT BOTH FACES THEREOF; SAID CELL WALLS HAVING THEIR MAXIMUM THICKNESS DIMENSION QUITE SMALL AS COMPARED TO THE CORRESPONDING TRANSVERSE DIMENSION OF THE CELLS; THE THICKNESS OF SAID CELL WALLS VARYING TRANSVERSELY OF THE GRID AND IN THE DIRECTION AXIAL TO THE CELLS FROM ONE FACE TO THE OTHER FACE AND THE VARIATION IN THICKNESS BEING MANY TIMES THAT REQUIRED AS DRAW TAPER AND SAID CELL WALLS HAVING A SHADOW-CASTING SHOULDER DEFINED, AS A RESULT OF SAID VARIATION, IN A PORTION OF SAID GRID INTERMEDIATE THE FACES THEREOF, SAID SHOULDER BEING POSITIONED CLOSER TO THE FACE OF THE GRID ADJACENT THE LIGHT SOURCE THAN THE OTHER FACE THEREOF.
References Cited (Backward Citations)
US2506951A
Cited
US2927994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |