US3176772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for removing detrital material from a liner, tubing and casing
Assignee: Individual
•
Filing: 1963-03-29
•
Granted: 1965-04-06
•
Expires: 1983-03-29
Abstract
No abstract record available.
Inventors
- 👤 Macgregor Robert Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:56
CPC Classifications
E; E21; E21B; E21B37/00; E21B37/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A DEVICE FOR REMOVING DETRITAL MATERIAL FROM A LINER, TUBING AND CASING, INCLUDING: A TUBULAR BODY PROVIDED WITH A SERIES OF DIAMETRIC BORES SPACED APART BOTH AXIALLY OF AND SPIRALLY OF THE BODY, AND SCRAPER MEMBERS POSITIONED IN EACH DIAMETRIC BORE AND EXTENDING RADIALLY OUTWARDLY THEREOF FOR CONTACT WITH THE LINER, TUBING, AND CASING, EACH SCRAPER MEMBER PROVIDED ON
Claim 2
Independent Claim
59 words
A DEVICE FOR REMOVING DETRITAL MATERIAL FROM A LINER, TUBING AND CASING, INCLUDING: A TUBULAR BODY PROVIDED WITH A SERIES OF DIAMETRIC BORES SPACED APART BOTH AXIALLY OF AND SPIRALLY OF THE BODY, AND SCRAPER MEMBERS POSITIONED IN EACH DIAMETRIC BORE AND EXTENDING RADIALLY OUTWARDLY THEREOF FOR CONTACT WITH THE LINER, TUBING, AND CASING, EACH SCRAPER MEMBER PROVIDED ON
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Cited
US1855046A
Cited
US2215514A
Cited
US2362198A
Cited
US2844835A
Cited
US3029456A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |