US3159351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture
Assignee: Individual
•
Filing: 1961-11-03
•
Granted: 1964-12-01
•
Expires: 1981-11-03
Abstract
No abstract record available.
Inventors
- 👤 Anthony A Dwyer
- 👤 Lloyd L Garnell
- 👤 Norman C Mcclay
- 👤 Sealock Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:11
CPC Classifications
F; F21; F21V; F21V29/00; F21V29/50; F21V29/70; F21W; F21W2121/00; Y; Y10; Y10S; Y10S362/00; Y10S362/806
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A LIGHTING FIXTURE COMPRISING AN ELECTRICAL SOCKET HAVING A LIGHT SOURCE, A STATIONARY TRANSLUCENT INNER MEMBER SURROUNDING THE LIGHT SOURCE AND MADE UP OF A PLURALITY OF CONCENTRIC CYLINDRICAL TUBES HAVING HORIZONTAL FLANGES CONNECTING THE ENDS OF ADJACENT TUBES, A STATIONARY OUTER MEMBER SUPERIMPOSED ON SAID INNER MEMBER AND MADE UP OF A PLURALITY OF CONCENTRIC CYLINDRICAL TUBES HAVING HORIZONTAL FLANGES CONNECTING THE ENDS OF ADJACENT TUBES AND HAVING A PLURALITY OF OPENINGS IN THE SIDES OF THE SMALLER TUBES AND AN OPENING AT THE TOP OF ITS NARROWER END, BOTH OF SAID INNER AND OUTER MEMBERS HAVING THEIR WIDER ENDS CLOSER TO SAID SOCKET AND THEIR NARROWER ENDS CLOSER TO THE LIGHT SOURCE TO CONCENTRATE THE LIGHT FROM THE LIGHT SOURCE.
Claim 2
Dependent Claim
122 words
A LIGHTING FIXTURE COMPRISING AN ELECTRICAL SOCKET HAVING A LIGHT SOURCE, A STATIONARY TRANSLUCENT INNER MEMBER SURROUNDING THE LIGHT SOURCE AND MADE UP OF A PLURALITY OF CONCENTRIC CYLINDRICAL TUBES HAVING HORIZONTAL FLANGES CONNECTING THE ENDS OF ADJACENT TUBES, A STATIONARY OUTER MEMBER SUPERIMPOSED ON SAID INNER MEMBER AND MADE UP OF A PLURALITY OF CONCENTRIC CYLINDRICAL TUBES HAVING HORIZONTAL FLANGES CONNECTING THE ENDS OF ADJACENT TUBES AND HAVING A PLURALITY OF OPENINGS IN THE SIDES OF THE SMALLER TUBES AND AN OPENING AT THE TOP OF ITS NARROWER END, BOTH OF SAID INNER AND OUTER MEMBERS HAVING THEIR WIDER ENDS CLOSER TO SAID SOCKET AND THEIR NARROWER ENDS CLOSER TO THE LIGHT SOURCE TO CONCENTRATE THE LIGHT FROM THE LIGHT SOURCE.
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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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |