US3288989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light unit
Assignee: MACKOWIAK JAN W AND MACKOIAK FREIDA
•
Filing: 1964-03-20
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Granted: 1966-11-29
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Expires: 1984-03-20
Abstract
No abstract record available.
Inventors
- 👤 George D Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:00
CPC Classifications
F; F21; F21V; F21V9/00; F21V9/08; F21V7/00; F21V7/22; F21V7/24; F21V7/28; F21V9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A LIGHT UNIT COMPRISING, MEANS DEFINING A SOURCE OF RADIANT ENERGIES, A TUBULAR WRAP-AROUND REFLECTOR SURROUNDING SAID SOURCE, SID REFLECTOR INCLUDING A PLURALITY OF SEGMENTS OF A TRANSPARENT CARRIR, SAID SEGMENTS BEING SLIGHTLY SPACED FROM EACH OTHER TO DEFINE AN OPENING BETWEEN ADJACENT SEGMENTS, EACH SEGMENTS HAVING A COATING ON ALL OF ONE SURFACE THEREOF SELECTIVELY REFLECTING ONE PART
Claim 2
Dependent Claim
59 words
A LIGHT UNIT COMPRISING, MEANS DEFINING A SOURCE OF RADIANT ENERGIES, A TUBULAR WRAP-AROUND REFLECTOR SURROUNDING SAID SOURCE, SID REFLECTOR INCLUDING A PLURALITY OF SEGMENTS OF A TRANSPARENT CARRIR, SAID SEGMENTS BEING SLIGHTLY SPACED FROM EACH OTHER TO DEFINE AN OPENING BETWEEN ADJACENT SEGMENTS, EACH SEGMENTS HAVING A COATING ON ALL OF ONE SURFACE THEREOF SELECTIVELY REFLECTING ONE PART
References Cited (Backward Citations)
US2293672A
Cited
US2382939A
Cited
US2660925A
Cited
US2798943A
Cited
US3099403A
Cited
US3174067A
Cited
US3188513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |