US3387670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for drilling and construction
Assignee: LOUIS D MENARD
•
Filing: 1965-11-12
•
Granted: 1968-06-11
•
Expires: 1985-11-12
Abstract
No abstract record available.
Inventors
- 👤 Louis D Menard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:44
CPC Classifications
E; E02; E02D; E02D11/00; E21; E21B; E21B7/00; E21B7/12; E21B7/124
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3097537A
Cited
US1102652A
Cited
US1667546A
Cited
US1958041A
Cited
US3023820A
Cited
US3215209A
Cited
US3291224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |