US3463914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting arrangement
Assignee: Original Hanau Quarzlampen GmbH
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Filing: 1967-07-11
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Granted: 1969-08-26
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Expires: 1987-07-11
Abstract
Abstract 1,125,056. Operating lamps. ORIGINAL HANAU QUARZLAMPEN G.m.b.H. 22 June, 1967 [30 July, 1966], No. 28842/67. Heading F4R. An operating lamp has one or more reflectors and at least one diffuser having on its inner face a light-scattering surface formed as an infra-red reflector. In the form shown, the lower part of the bulb 10 is provided with a mirror surface which may be an infra-red reflector. The lamp has a reflector 12 which may transmit infra-red light. The diffuser 20 has a light scattering surface 24 on which is formed an infra-red reflector 16 so that the infra-red light is reflected as divergent rays 16b.
Inventors
- 👤 Theodor Lutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:51
CPC Classifications
F; F21; F21V; F21V9/00; F21V9/04; F21V7/00; F21V7/22; F21V7/24; F21V7/28; F21W; F21W2131/00; F21W2131/20; F21W2131/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2280402A
Cited
US3255342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |