US2980018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well perforator shaped charge
Assignee: Borg Warner Corp
•
Filing: 1956-01-03
•
Granted: 1961-04-18
•
Expires: 1976-01-03
Abstract
No abstract record available.
Inventors
- 👤 George F Turechek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:46
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/11; E21B43/116; E21B43/117; F; F42; F42B; F42B1/00; F42B1/02; F42B1/024; Y; Y10; Y10S; Y10S102/00; Y10S102/701
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2628559A
Cited
US2587244A
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US2764938A
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US2708408A
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US2809585A
Cited
FI26986A
Cited
US2792783A
Cited
US2667836A
Cited
US2682834A
Cited
FR1057631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |