US2785631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped explosive-charge perforating apparatus
Assignee: Borg Warner Corp
•
Filing: 1950-10-05
•
Granted: 1957-03-19
•
Expires: 1970-10-05
Abstract
No abstract record available.
Inventors
- 👤 Blanchard Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:33
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2415814A
Cited
US2402153A
Cited
US2499440A
Cited
US2494256A
Cited
US2543057A
Cited
US2630182A
Cited
US2629325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-18 | 1960-09-17 | 1961-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-18 | 1964-09-17 | 1965-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-18 | 1968-09-17 | 1969-03-19 | $7700.00 | Window Closed / Lapsed |