Patent US3263457A successfully refreshed from Google Patents.
US3263457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoflash lamp
Assignee: Osram GmbH
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Filing: 1963-02-04
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Granted: 1966-08-02
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Expires: 1983-02-04
Abstract
No abstract record available.
Inventors
- 👤 Reiber Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:48
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/38; H01J9/395; F; F21; F21K; F21K5/00; F21K5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PHOTOFLASH LAMP COMPRISING AN ELONGATED TUBULAR ENVELOPE HAVING A VOLUME OF LESS THAN ONE CUBIC CENTIMETER AND FORMED OF RADIATION-TRANSMITTING VITREOUS MATERIAL FILLED WITH OXYGEN AT A PRESSURE OF ABOUT 20 ATMOSPHERES OR GREATER, FINELY DIVIDED COMBUSTIBLE MATERIAL, AND IGNITION MEANS: SAID IGNITION MEANS HAVING AT LEAST ONE CURRENT INLEAD WHICH EXTENDS INWARDLY FROM AT LEAST ONE END OF SAID ENVELOPE A TOTAL DISTANCE OF LESS THAN 25% OF THE TOTAL INTERNAL LENGTH OF THE ENVELOPE, AND THE PORTION OF THE INTERNAL LENGTH OF THE ENVELOPE EXCLUSIVE OF THE INWARD EXTENTS OF THE IGNITION MEANS CONTAINING SAID COMBUSTIBLE MATERIAL AND CONSTITUTING AT LEAST 75% OF THE TOTAL INTERNAL LENGTH OF THE ENVELOPE.
Claim 2
Dependent Claim
113 words
A PHOTOFLASH LAMP COMPRISING AN ELONGATED TUBULAR ENVELOPE HAVING A VOLUME OF LESS THAN ONE CUBIC CENTIMETER AND FORMED OF RADIATION-TRANSMITTING VITREOUS MATERIAL FILLED WITH OXYGEN AT A PRESSURE OF ABOUT 20 ATMOSPHERES OR GREATER, FINELY DIVIDED COMBUSTIBLE MATERIAL, AND IGNITION MEANS: SAID IGNITION MEANS HAVING AT LEAST ONE CURRENT INLEAD WHICH EXTENDS INWARDLY FROM AT LEAST ONE END OF SAID ENVELOPE A TOTAL DISTANCE OF LESS THAN 25% OF THE TOTAL INTERNAL LENGTH OF THE ENVELOPE, AND THE PORTION OF THE INTERNAL LENGTH OF THE ENVELOPE EXCLUSIVE OF THE INWARD EXTENTS OF THE IGNITION MEANS CONTAINING SAID COMBUSTIBLE MATERIAL AND CONSTITUTING AT LEAST 75% OF THE TOTAL INTERNAL LENGTH OF THE ENVELOPE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |