Patent US2543814A successfully refreshed from Google Patents.
US2543814A
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Means and method of tilting explosive charges in wells
Assignee: WELEX JET SERVICES Inc
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Filing: 1946-12-26
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Granted: 1951-03-06
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Expires: 1966-12-26
Abstract
No abstract record available.
Inventors
- 👤 Willis H Thompson
- 👤 Eugene O Tolson
- 👤 Robert H Mclemore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:23
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/08; E; E21; E21B; E21B43/00; E21B43/11; E21B43/116; E21B43/118
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371270A
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US2016919A
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US2033562A
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US2067408A
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US2229493A
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US2228623A
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US2390676A
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US2426517A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |