US2742857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gun perforators
Assignee: Lane Wells Co
•
Filing: 1950-01-12
•
Granted: 1956-04-24
•
Expires: 1970-01-12
Abstract
No abstract record available.
Inventors
- 👤 George F Turechek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:11
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/08; E; E21; E21B; E21B43/00; E21B43/11; E21B43/116; E21B43/117
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2139104A
Cited
US2295634A
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US2266345A
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US2399211A
Cited
US2530966A
Cited
US2402153A
Cited
US2494256A
Cited
US2565788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |