US2186426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric blasting cap
Assignee: Hercules Powder Co
•
Filing: 1937-12-22
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Granted: 1940-01-09
•
Expires: 1957-12-22
Abstract
No abstract record available.
Inventors
- 👤 Henry E Nash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:55
CPC Classifications
C; C06; C06B; C06B25/00; C06B25/04; Y; Y10; Y10S; Y10S149/00; Y10S149/11; Y10S149/114
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) | 1943-01-08 | 1943-07-10 | 1944-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-01-08 | 1947-07-10 | 1948-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-01-08 | 1951-07-10 | 1952-01-09 | $7700.00 | Window Closed / Lapsed |