US3180979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1961-04-20
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Granted: 1965-04-27
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Expires: 1981-04-20
Abstract
No abstract record available.
Inventors
- 👤 Kurt W Thurston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:27
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/02; F21L; F21L2/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
INA WARNING LIGHT, A CASE, A POWER SUPPLY MOUNTED IN THE CASE, A HEAD MOUNTED ON THE CASE, THE HEAD COMPRISING A SUBSTANTIALLY CIRCULAR FRAME, A LAMP MOUNTED IN THE FRAME, A LENS MOUNTED ON EACH SIDE OF THE FRAME AND ON OPPOSITE SIDES OF THE LAMP, AND A REMOVABLE REFLECTOR MOUNTED IN THE FRAME ON ONE SIDE OF THE LAMP AND BETWEEN THE LENSES, THE REFLECTOR HAVING A SUBSTANTIALLY PLANAR OUTER ANNULAR MARGIN AND A HEMISPHERICAL RECESS IN ITS CENTRAL PORTION, THE HEMISPHERICAL RECESS HAVING A DIAMETER SUBSTANTIALLY LESS THAN THE DIAMETER OF THE REFLECTOR AND HAVING AS ITS CENTER THE CENTER OF THE LAMP, THE RECESS SERVING TO CONCENTRATE THE LIGHT RAYS FROM THE LAMP TO REFLECT THE SAME THROUGH THE LENS ON THE OPPOSITE SIDE OF THE LAMP, THE OUTER ANNULAR PORTION HAVING A WIDTH SO THAT IT CONSTITUTES A SUBSTANTIAL PORTION OF THE REFLECTOR.
Claim 2
Dependent Claim
148 words
INA WARNING LIGHT, A CASE, A POWER SUPPLY MOUNTED IN THE CASE, A HEAD MOUNTED ON THE CASE, THE HEAD COMPRISING A SUBSTANTIALLY CIRCULAR FRAME, A LAMP MOUNTED IN THE FRAME, A LENS MOUNTED ON EACH SIDE OF THE FRAME AND ON OPPOSITE SIDES OF THE LAMP, AND A REMOVABLE REFLECTOR MOUNTED IN THE FRAME ON ONE SIDE OF THE LAMP AND BETWEEN THE LENSES, THE REFLECTOR HAVING A SUBSTANTIALLY PLANAR OUTER ANNULAR MARGIN AND A HEMISPHERICAL RECESS IN ITS CENTRAL PORTION, THE HEMISPHERICAL RECESS HAVING A DIAMETER SUBSTANTIALLY LESS THAN THE DIAMETER OF THE REFLECTOR AND HAVING AS ITS CENTER THE CENTER OF THE LAMP, THE RECESS SERVING TO CONCENTRATE THE LIGHT RAYS FROM THE LAMP TO REFLECT THE SAME THROUGH THE LENS ON THE OPPOSITE SIDE OF THE LAMP, THE OUTER ANNULAR PORTION HAVING A WIDTH SO THAT IT CONSTITUTES A SUBSTANTIAL PORTION OF THE REFLECTOR.
References Cited (Backward Citations)
US1194929A
Cited
US1281752A
Cited
US1800078A
Cited
US2298042A
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US2287328A
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US2997575A
Cited
US2798943A
Cited
US2918668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-26 | 1968-10-26 | 1969-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-26 | 1972-10-26 | 1973-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-26 | 1976-10-26 | 1977-04-27 | $7700.00 | Window Closed / Lapsed |