US3140053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light fixture
Assignee: Individual
•
Filing: 1961-09-28
•
Granted: 1964-07-07
•
Expires: 1981-09-28
Abstract
No abstract record available.
Inventors
- 👤 Lowell Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:51
CPC Classifications
F; F21; F21V; F21V11/00; F21V11/16; F21V11/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
69 words
IN COMBINATION WITH A LIGHT BULB, AN ILLUMINATION DEVICE COMPRISING A BASE INCLUDING AT LEAST FOUR PLATES PIVOTALLY MOUNTED TO ONE ANOTHER TO FORM A PERIPHERALLY CONTINUOUS BODY WITH A FRONT OPENING, AT LEAST TWO OF SAID PLATES DETACHABLY ENGAGING THE BULB FOR DETACHABLY MOUNTING THE BASE THEREON, AND A PLATE-LIKE MEMBER PIVOTALLY MOUNTED ON SAID BASE FOR MOVEMENT INTO AND OUT OF OVERLYING RELATION WITH SAID FRONT OPENING.
References Cited (Backward Citations)
US836411A
Cited
DE493159C
Cited
US1935045A
Cited
FR1050146A
Cited
US2785291A
Cited
US2727980A
Cited
US2990494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |