Patent US3355583A successfully refreshed from Google Patents.
US3355583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fitting
Assignee: US Philips Corp
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Filing: 1965-04-20
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Granted: 1967-11-28
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Expires: 1985-04-20
Abstract
No abstract record available.
Inventors
- 👤 Sellenraad Christoffel
- 👤 Berns Gerhardus Johannus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:40
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/16; F; F21; F21V; F21V17/00; F21V17/10; F21V17/105; F21V3/00; F21V3/04; F21V3/06; F21Y; F21Y2103/00; F21Y2113/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
AN ELECTRIC LIGHT FIXTURE COMPRISING A HOUSING, A LIGHT-TRANSPARENT DIFFUSER, BOTH HOUSING AND DIFFUSER HAVING OPPOSED FITTING RIMS, AND FLEXIBLE MAGNETIC MEANS PERMANENTLY FIXED ON SAID RIM OF THE DIFFUSER, SAID FLEXIBLE MAGNETIC MEANS BEING ADAPTED TO FLEX IN ORDER TO SEPARATE SAID OPPOSED FITTING RIMS AND PERMIT ACCESS TO THE INTERIOR OF SAID LIGHT FIXTURE, SAID DIFFUSER BEING CONSTITUTED OF A SYNTHETIC SUBSTANCE OF A THICKNESS OF NOT MORE THAN 1 MM.
Claim 2
Dependent Claim
73 words
AN ELECTRIC LIGHT FIXTURE COMPRISING A HOUSING, A LIGHT-TRANSPARENT DIFFUSER, BOTH HOUSING AND DIFFUSER HAVING OPPOSED FITTING RIMS, AND FLEXIBLE MAGNETIC MEANS PERMANENTLY FIXED ON SAID RIM OF THE DIFFUSER, SAID FLEXIBLE MAGNETIC MEANS BEING ADAPTED TO FLEX IN ORDER TO SEPARATE SAID OPPOSED FITTING RIMS AND PERMIT ACCESS TO THE INTERIOR OF SAID LIGHT FIXTURE, SAID DIFFUSER BEING CONSTITUTED OF A SYNTHETIC SUBSTANCE OF A THICKNESS OF NOT MORE THAN 1 MM.
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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |