Patent US3354343A successfully refreshed from Google Patents.
US3354343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual beam electric lamp
Assignee: Individual
•
Filing: 1964-05-19
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Granted: 1967-11-21
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Expires: 1984-05-19
Abstract
No abstract record available.
Inventors
- 👤 Elman B Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:07
CPC Classifications
F; F21; F21S; F21S41/00; F21S41/10; F21S41/14; F21S41/17; F21S41/173
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A LAMP COMPRISING A FIRST REFLECTING SURFACE HAVING A CROSS-SECTION THROUGHOUT THE LENGTH THEREOF SUBSTANTIALLY IN THE FORM OF A PORTION OF A FIRST CONIC SECTION, A SECOND REFLECTING SURFACE DISPOSED ADJACENT TO SAID FIRST REFLECTING SURFACE AND HAVING A CROSS-SECTION THROUGHOUT THE LENGTH THEREOF SUBSTANTIALLY IN THE FORM OF A PORTION OF A SECOND CONIC SECTION WHICH IS DIFFERENT FROM THE FIRST CONIC SECTION, SAID FIRST AND SECOND REFLECTING SURFACES BEING DISPOSED WITH THE FOCUS OF THE CONIC SECTION OF EACH OF THEIR RESPECTIVE CROSS-SECTIONS INTERSECTED BY A COMMON LINE, AND A SOURCE OF LIGHT DISPOSED ADJACENT TO THE COMMON LINE FOR DIRECTING LIGHT TOWARD SAID FIRST AND
Claim 2
Dependent Claim
109 words
A LAMP COMPRISING A FIRST REFLECTING SURFACE HAVING A CROSS-SECTION THROUGHOUT THE LENGTH THEREOF SUBSTANTIALLY IN THE FORM OF A PORTION OF A FIRST CONIC SECTION, A SECOND REFLECTING SURFACE DISPOSED ADJACENT TO SAID FIRST REFLECTING SURFACE AND HAVING A CROSS-SECTION THROUGHOUT THE LENGTH THEREOF SUBSTANTIALLY IN THE FORM OF A PORTION OF A SECOND CONIC SECTION WHICH IS DIFFERENT FROM THE FIRST CONIC SECTION, SAID FIRST AND SECOND REFLECTING SURFACES BEING DISPOSED WITH THE FOCUS OF THE CONIC SECTION OF EACH OF THEIR RESPECTIVE CROSS-SECTIONS INTERSECTED BY A COMMON LINE, AND A SOURCE OF LIGHT DISPOSED ADJACENT TO THE COMMON LINE FOR DIRECTING LIGHT TOWARD SAID FIRST AND
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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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |