US2893692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibratory impact tool
Assignee: Phillips Petroleum Co
•
Filing: 1955-01-03
•
Granted: 1959-07-07
•
Expires: 1975-01-03
Abstract
No abstract record available.
Inventors
- 👤 John W Marx
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:29
CPC Classifications
E; E21; E21B; E21B4/00; E21B4/06; E21B4/12; Y; Y10; Y10T; Y10T74/00; Y10T74/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2530224A
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US2602101A
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US2708237A
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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) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |