US964550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the manufacture of black powder and other explosives.
Assignee: DuPont Powder Coatings USA Inc
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Filing: 1909-07-28
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Granted: 1910-07-19
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Expires: 1929-07-28
Abstract
No abstract record available.
Inventors
- 👤 Francis I Du Pont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:40
CPC Classifications
B; B28; B28B; B28B13/00; B28B13/02; B28B13/0215
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) | 1913-07-18 | 1914-01-17 | 1914-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-07-18 | 1918-01-17 | 1918-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-07-18 | 1922-01-17 | 1922-07-19 | $7700.00 | Window Closed / Lapsed |