US2416639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slow-burning powder composition
Assignee: Ensign Bickford Co
•
Filing: 1944-07-08
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Granted: 1947-02-25
•
Expires: 1964-07-08
Abstract
No abstract record available.
Inventors
- 👤 David E Pearsall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:47
CPC Classifications
C; C06; C06C; C06C9/00; C06B; C06B33/00; C06B33/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1438759A
Cited
US1382563A
Cited
US1833573A
Cited
US2001212A
Cited
US1971502A
Cited
US2341262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-24 | 1950-08-26 | 1951-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-24 | 1954-08-26 | 1955-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-24 | 1958-08-26 | 1959-02-25 | $7700.00 | Window Closed / Lapsed |