Patent US3265885A successfully refreshed from Google Patents.
US3265885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-intensity air-cooled electric lamp assembly
Assignee: METRO KALVAR Inc
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Filing: 1964-02-13
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Granted: 1966-08-09
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Expires: 1984-02-13
Abstract
No abstract record available.
Inventors
- 👤 Robert W Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:26
CPC Classifications
F; F21; F21V; F21V29/00; F21V29/50; F21V29/70; F21V29/74; F21V29/75; F21V29/56
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
A LAMP HOUSING ASSEMBLY FOR HIGH INTENSITY ELECTRIC LAMPS OF THE TYPE HAVING A CYLINDRICAL TRANSPARENT ENVELOPE POSITIONED BETWEEN COAXIALLY DISPOSED METALLIC TERMINALS, SAID LAMP ASSEMBLY COMPRISING: A HOUSING BLOCK FORMED OF METAL HAVING HIGH HEAT CONDUCTIVITY AND DEFINING A CAVITY OF ESSENTIALLY PARABOLIC CROSS SECTION AND HAVING A FOCAL AXIS EXTENDING THE LENGTH OF THE HOUSING BLOCK, SAID HOUSING BLOCK HAVING A PLURALITY OF INTEGRAL COOLING FINS EXTENDING FROM OPPOSITE SIDES THEREOF; MEANS FOR SUPPORTING SAID ELECTRIC LAMP BY ITS TERMINALS AT THE FOCAL AXIS OF SAID CAVITY; A DICHROIC COATING ON AT LEAST
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |