US3695949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Black smoke marker
Assignee: United States Department of the Army
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Filing: 1971-08-02
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Granted: 1972-10-03
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Expires: 1991-08-02
Abstract
Abstract A BLACK SMOKE MARKER PELLET FOR PROJECTILES COMPRISES AN IGNITER COMPOSITION COMPOSED OF BORON POWDER, POTASSIUM NITRATE AND A BINDER SUSPERIMPOSED DIRECTLY ON A NOVEL BLACK SMOKE COMPOSITION CONSISTING ESSENTIALLY OF HEXACHLOROCYCLOPENTADIENE DIMER AND/OR HEXACHLOROBENZENE, A POLYCYCLIC AROMATIC HYDROCARBON SUCH AS ANTHRACENE, A POWDERED METALLIC FUEL SUCH AS MAGNESIUM AND AN INORGANIC OXIDIZER SUCH AS STRONTIUM NITRATE.
Inventors
- 👤 Donald J Freeman
- 👤 Ambrose A Fulkerson
- 👤 Kenneth J Grall
- 👤 Samuel J Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:54
CPC Classifications
C; C06; C06D; C06D3/00; Y; Y10; Y10S; Y10S149/00; Y10S149/117
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |