US3415329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and an apparatus for installing underground pipes
Assignee: VAVRA HYDRAULTEKNIK AB
•
Filing: 1967-01-13
•
Granted: 1968-12-10
•
Expires: 1987-01-13
Abstract
No abstract record available.
Inventors
- 👤 Marlind Goran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:16
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/04; E21B7/046; E21B7/06; E21B7/064
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US207122A
Cited
US744763A
Cited
US1413503A
Cited
US1468774A
Cited
US1896109A
Cited
US1948707A
Cited
US2693345A
Cited
US3023820A
Cited
US3356167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |