Patent US3193677A successfully refreshed from Google Patents.
Patent US3310672A successfully refreshed from Google Patents.
US3310672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined lighting fixture and fresh air intake
Assignee: Individual
•
Filing: 1964-09-28
•
Granted: 1967-03-21
•
Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Bursell Claes Goran Birger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:24
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/078; F21; F21S; F21S8/00; F21S8/02; F21V; F21V33/00; F21V33/0088
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A COMBINED ELECTRIC LIGHTING FIXTURE, AND FRESH AIR INTAKE FOR INSTALLATION THROUGH AN OPENING IN A CEILING ABOVE WHICH AIR UNDER PRESSURE IS SUPPLIED COMPRISING A CASING CAPABLE OF BEING POSITIONED THROUGH SAID CEILING OPENING AND HAVING AN OPEN END FOR FACING BELOW THE CEILING, SAID CASING HAVING AIR INTAKE SLOTS SPACED EQUIDISTANTLY ALONG THE CIRCUMFERENCE OF SAID CASING, AIR DEFLECTORS CARRIED BY SAID CASING ON THE INTERIOR THEREOF FOR SETTING THE AIR ENTERING SAID SLOTS INTO A WHIRLING MOTION AND AN ELECTRIC LIGHTING MEANS CONNECTED TO SAID CASING AND POSITIONED INSIDE THE SAME.
Claim 2
Dependent Claim
94 words
A COMBINED ELECTRIC LIGHTING FIXTURE, AND FRESH AIR INTAKE FOR INSTALLATION THROUGH AN OPENING IN A CEILING ABOVE WHICH AIR UNDER PRESSURE IS SUPPLIED COMPRISING A CASING CAPABLE OF BEING POSITIONED THROUGH SAID CEILING OPENING AND HAVING AN OPEN END FOR FACING BELOW THE CEILING, SAID CASING HAVING AIR INTAKE SLOTS SPACED EQUIDISTANTLY ALONG THE CIRCUMFERENCE OF SAID CASING, AIR DEFLECTORS CARRIED BY SAID CASING ON THE INTERIOR THEREOF FOR SETTING THE AIR ENTERING SAID SLOTS INTO A WHIRLING MOTION AND AN ELECTRIC LIGHTING MEANS CONNECTED TO SAID CASING AND POSITIONED INSIDE THE SAME.
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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |