US850266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproof composition for explosives.
Assignee: DuPont Powder Coatings USA Inc
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Filing: 1905-10-24
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Granted: 1907-04-16
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Expires: 1925-10-24
Abstract
No abstract record available.
Inventors
- 👤 Fin Sparre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:46
CPC Classifications
C; C06; C06B; C06B23/00; C06B23/001
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) | 1910-04-15 | 1910-10-15 | 1911-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-04-15 | 1914-10-15 | 1915-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-04-15 | 1918-10-15 | 1919-04-16 | $7700.00 | Window Closed / Lapsed |