Patent US3667992A successfully refreshed from Google Patents.
US3667992A
Expired / Lapsed
US
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Fulminating material application technique
Assignee: GTE Sylvania Inc
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Filing: 1970-10-22
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Granted: 1972-06-06
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Expires: 1990-10-22
Abstract
Abstract A METHOD OF APPLYING FULMINATING MATERIAL ON THE PRIMER ANVIL WIRE OF A PERCUSSIVE-TYPE PHOTOFLASH LAMP IN WHICH: THE ANVIL WIRE IS DIPPED INTO AN AQUEOUS SLURRY CONTAINING RED PHOSPHORUS TO PROVIDE A COATING THEREOF ON THE WIRE; THE COATING IS DRIED; AND THEN THE COATED WIRE IS DIPPED INTO AN AQUEOUS SOLUTION OF SODIUM CHLORATE SO AS TO PERMEATE THE PHOSPHORUS CONTAINING COATING WITH THE CHLORATE SOLUTION.
Inventors
- 👤 Stephen V Brown
- 👤 Thomas B Mcdonough
- 👤 John W Shaffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:16
CPC Classifications
F; F21; F21K; F21K5/00; F21K5/02; F21K5/023; F21K5/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |