Patent US2261138A successfully refreshed from Google Patents.
Patent US3113728A successfully refreshed from Google Patents.
US3113728A
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US
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Artificial light and daylighting structure
Assignee: OI Glass Inc
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Filing: 1960-06-24
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Granted: 1963-12-10
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Expires: 1980-06-24
Abstract
No abstract record available.
Inventors
- 👤 Robert A Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:28
CPC Classifications
F; F21; F21V; F21V5/00; F21V5/02; E; E04; E04B; E04B5/00; E04B5/46; E04B9/00; E04B9/32; E04C; E04C1/00; E04C1/42; E04D; E04D3/00; E04D3/24; E04D3/28; F21S; F21S11/00; F21S19/00; F21S19/005; F21V7/00; F21V7/0008; F21V7/0016; F21V7/0091; F21Y; F21Y2103/00; F21Y2103/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN A DAYLIGHTING STRUCTURE, THE COMBINATION COMPRISING A CEILING OF A ROOM HAVING AN OPENING THERETHROUGH EXPOSED TO THE EXTERIOR THROUGH WHICH DAYLIGHT FROM THE EXTERIOR PASSES, A PLURALITY OF LIGHT-TRANSMITTING UNITS POSITIONED IN SAID OPENING, SOME OF SAID UNITS BEING MADE ENTIRELY OF LIGHT-TRANSMITTING MATERIAL THROUGH WHICH DAYLIGHT MAY PASS FROM THE EXTERIOR TO THE INTERIOR OF THE ROOM, SAID LATTER UNITS HAVING LIGHT-DIFFUSING MEANS ON A SURFACE THEREOF ADJACENT THE INTERIOR, AT LEAST ONE OF SAID UNITS COMPRISING A SOURCE OF ARTIFICIAL LIGHT AND A CLOSURE OF LIGHT-TRANSMITTING MATERIAL MOUNTED BELOW
Claim 2
Dependent Claim
93 words
IN A DAYLIGHTING STRUCTURE, THE COMBINATION COMPRISING A CEILING OF A ROOM HAVING AN OPENING THERETHROUGH EXPOSED TO THE EXTERIOR THROUGH WHICH DAYLIGHT FROM THE EXTERIOR PASSES, A PLURALITY OF LIGHT-TRANSMITTING UNITS POSITIONED IN SAID OPENING, SOME OF SAID UNITS BEING MADE ENTIRELY OF LIGHT-TRANSMITTING MATERIAL THROUGH WHICH DAYLIGHT MAY PASS FROM THE EXTERIOR TO THE INTERIOR OF THE ROOM, SAID LATTER UNITS HAVING LIGHT-DIFFUSING MEANS ON A SURFACE THEREOF ADJACENT THE INTERIOR, AT LEAST ONE OF SAID UNITS COMPRISING A SOURCE OF ARTIFICIAL LIGHT AND A CLOSURE OF LIGHT-TRANSMITTING MATERIAL MOUNTED BELOW
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |