US3348094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection lamp including a blackening control device
Assignee: GTE Sylvania Inc
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Filing: 1965-12-28
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Granted: 1967-10-17
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Expires: 1985-12-28
Abstract
No abstract record available.
Inventors
- 👤 Richard E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:40
CPC Classifications
H; H01; H01K; H01K7/00; H01K7/02; G; G03; G03B; G03B21/00; G03B21/14; G03B21/20; H01K1/00; H01K1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROJECTION LAMP COMPRISING: AN HERMETICALLY SEALED GLASS ENVELOPE; A PLURALITY OF LEAD-IN WIRES SEALED IN SAID ENVELOPE; A FILAMENT DISPOSED IN SAID ENVELOPE AND CONNECTEDF TO TWO OF SAID LEAD-IN WINES; A REFLECTOR DISPOSED IN SAID ENVELOPE AND SPACED FROM THE INNER WALL THEREOF, SAID REFLECTOR BEING FURTHER DISPOSED IN LIGHT-REFLECTING RELATIONSHIP WITH RESPECT TO SAID FILAMENT; MEANS FOR SUPPORTING SAID REFLECTOR DISPOSED AS AFORESAID; A PROBE MOUNTED ON ONE OF SAID LEAD-IN WIRES AND EXTENDING SUBSTANTIALLY PARALLEL TO AND CLOSE TO SAID FILAMENT; AND HIGH RESISTANCE MEANS CONNECTING SAID PROBE TO A VOLTAGE SOURCE.
Claim 2
Dependent Claim
96 words
A PROJECTION LAMP COMPRISING: AN HERMETICALLY SEALED GLASS ENVELOPE; A PLURALITY OF LEAD-IN WIRES SEALED IN SAID ENVELOPE; A FILAMENT DISPOSED IN SAID ENVELOPE AND CONNECTEDF TO TWO OF SAID LEAD-IN WINES; A REFLECTOR DISPOSED IN SAID ENVELOPE AND SPACED FROM THE INNER WALL THEREOF, SAID REFLECTOR BEING FURTHER DISPOSED IN LIGHT-REFLECTING RELATIONSHIP WITH RESPECT TO SAID FILAMENT; MEANS FOR SUPPORTING SAID REFLECTOR DISPOSED AS AFORESAID; A PROBE MOUNTED ON ONE OF SAID LEAD-IN WIRES AND EXTENDING SUBSTANTIALLY PARALLEL TO AND CLOSE TO SAID FILAMENT; AND HIGH RESISTANCE MEANS CONNECTING SAID PROBE TO A VOLTAGE SOURCE.
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |