US2842340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill carriage
Assignee: DRILL CARRIER CORP
•
Filing: 1954-08-16
•
Granted: 1958-07-08
•
Expires: 1974-08-16
Abstract
No abstract record available.
Inventors
- 👤 John W Burress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:21
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/027; B; B62; B62D; B62D55/00; B62D55/08; B62D55/104; B62D55/116; E21B15/00; E21B15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1429474A
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US1535411A
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US2121189A
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US2348899A
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US2434693A
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US2389558A
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US2446242A
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US2646968A
Cited
US2740618A
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US2659583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |