Patent US3473472A successfully refreshed from Google Patents.
US3473472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoflash cartridge
Assignee: United States Department of the Navy
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Filing: 1964-08-13
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Granted: 1969-10-21
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Expires: 1984-08-13
Abstract
No abstract record available.
Inventors
- 👤 Billy R Bliss
- 👤 Clarence W Gilliam
- 👤 John E Laswell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:22
CPC Classifications
F; F42; F42B; F42B3/00; F21; F21K; F21K5/00; F42B4/00; F42B4/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PHOTOFLASH CARTRIDGE COMPRISING: A CARTRIDGE CASE HAVING A CLOSED END AND AN OPEN END, AN EXPELLING POWDER CHARGE WITHIN SAID CARTRIDGE CASE ADJACENT SAID CLOSED END, A DELAY FUZE WITHIN SAID CARTRIDGE CASE ADJACENT SAID EXPELLING POWDER CHARGE, A FIRST INNER CONTAINER WITHIN SAID CARTRIDGE CASE CONTAINING AN EXPLOSIVE CHARGE, A DETONATOR POSITIONED BETWEEN SAID DELAY FUZE AND SAID EXPLOSIVE CHARGE, A SECOND CONTAINER WITHIN SAID CARTRIDGE CASE ENCIRCLING SAID FIRST CONTAINER AND CONTAINING A CHARGE OF PHOTOFLASH COMPOSITION, AND A CAP CLOSING THE OPEN END OF SAID CARTRIDGE CASE.
Claim 2
Dependent Claim
91 words
A PHOTOFLASH CARTRIDGE COMPRISING: A CARTRIDGE CASE HAVING A CLOSED END AND AN OPEN END, AN EXPELLING POWDER CHARGE WITHIN SAID CARTRIDGE CASE ADJACENT SAID CLOSED END, A DELAY FUZE WITHIN SAID CARTRIDGE CASE ADJACENT SAID EXPELLING POWDER CHARGE, A FIRST INNER CONTAINER WITHIN SAID CARTRIDGE CASE CONTAINING AN EXPLOSIVE CHARGE, A DETONATOR POSITIONED BETWEEN SAID DELAY FUZE AND SAID EXPLOSIVE CHARGE, A SECOND CONTAINER WITHIN SAID CARTRIDGE CASE ENCIRCLING SAID FIRST CONTAINER AND CONTAINING A CHARGE OF PHOTOFLASH COMPOSITION, AND A CAP CLOSING THE OPEN END OF SAID CARTRIDGE CASE.
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) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |