Patent US3155174A successfully refreshed from Google Patents.
US3155174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel powered sediment corer
Assignee: Individual
•
Filing: 1961-04-12
•
Granted: 1964-11-03
•
Expires: 1981-04-12
Abstract
No abstract record available.
Inventors
- 👤 Shale J Niskin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:02
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/12; E21B7/124; E21B7/1245; E21B49/00; E21B49/02; E21B49/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
A CORING DEVICE FOR OBTAINING SAMPLES OF OCEANIC DEPOSITS COMPRISING AN ELONGATED CORE SAMPLE BARREL HAVING AN UPPER PORTION FORMED OF MATERIAL HAVING A SPECIFIC GRAVITY LESS THAN SEA WATER, AND HAVING A HEAD AT THE LOWER PORTION OF THE BARREL HAVING A SPECIFIC GRAVITY GREATER THAN SEA WATER, SAID BARREL HAVING AN OVERALL SPECIFIC GRAVITY GREATER THAN SEA WATER SO THAT IT WILL SINK IN SEA WATER, MEANS FOR ATTACHING A LINE AT
References Cited (Backward Citations)
US1661091A
Cited
US2227198A
Cited
US2264449A
Cited
US2405127A
Cited
US2798378A
Cited
US3078931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |