Patent US2706860A successfully refreshed from Google Patents.
US2706860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pivot suspension for well survey instruments
Assignee: Technical Oil Tool Corp
•
Filing: 1951-07-09
•
Granted: 1955-04-26
•
Expires: 1971-07-09
Abstract
No abstract record available.
Inventors
- 👤 Suter Oswald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:03
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/02; E21B47/022; E21B47/0236
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US465308A
Cited
US448896A
Cited
GB190804883A
Cited
US943890A
Cited
US1469079A
Cited
US1574452A
Cited
US1843868A
Cited
US2015905A
Cited
US2058004A
Cited
US2109690A
Cited
US2205022A
Cited
US2239682A
Cited
US2272336A
Cited
US2272546A
Cited
US2364908A
Cited
US2471618A
Cited
US2437132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-25 | 1958-10-25 | 1959-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-25 | 1962-10-25 | 1963-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-25 | 1966-10-25 | 1967-04-26 | $7700.00 | Window Closed / Lapsed |