US2947250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped charge assembly and gun
Assignee: Welex Inc
•
Filing: 1951-09-24
•
Granted: 1960-08-02
•
Expires: 1971-09-24
Abstract
No abstract record available.
Inventors
- 👤 Henry H Mohaupt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:16
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/11; E21B43/116; E21B43/117; F; F42; F42B; F42B3/00; F42B3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2252996A
Cited
US2462784A
Cited
GB610106A
Cited
US2494256A
Cited
US2506836A
Cited
US2655619A
Cited
FR986573A
Cited
FR989329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |