Patent US1106087A successfully refreshed from Google Patents.
US1106087A
Expired / Lapsed
US
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Method of forming explosive black powder into spherical grains.
Assignee: Individual
•
Filing: 1913-08-13
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Granted: 1914-08-04
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Expires: 1933-08-13
Abstract
No abstract record available.
Inventors
- 👤 Francis I Du Pont
- 👤 Ernest Du Pont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:06
CPC Classifications
C; C06; C06B; C06B21/00; C06B21/0033; C06B21/0066; Y; Y10; Y10S; Y10S425/00; Y10S425/101
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) | 1917-08-03 | 1918-02-02 | 1918-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-08-03 | 1922-02-02 | 1922-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-08-03 | 1926-02-02 | 1926-08-04 | $7700.00 | Window Closed / Lapsed |