US3079998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scraper
Assignee: Individual
•
Filing: 1958-06-09
•
Granted: 1963-03-05
•
Expires: 1978-06-09
Abstract
No abstract record available.
Inventors
- 👤 Franz G Reuter
- 👤 Nehse Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:32
CPC Classifications
E; E21; E21B; E21B37/00; E21B37/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A RESILENT SCRAPING DEVICE FOR REMOVING PARAFFIN DEPOSITS FROM THE INSIDE WALL OF AN OIL-CARRYING CONDUIT, SAID DEVICE COMPRISING A TUBULAR BODY FORMED OF TWO OPPOSED SEMI-CYLINDRICALLY SHAPED SECTIONS OF PARAFFIN-REPELLENT ABRASION-RESISTANT RESILIENT POLYURETHANE RUBBER ADAPTED TO BE POSITIONED IN SAID CONDUIT CIRCUMFERENTIALLY DISPOSED ABOUT A CONNECTING ROD DISPOSED IN SAID CONDUIT FOR RECIPROCAL MOVEMENT THEREIN, EACH OF SAID SECTIONS OF
Claim 2
Dependent Claim
61 words
A RESILENT SCRAPING DEVICE FOR REMOVING PARAFFIN DEPOSITS FROM THE INSIDE WALL OF AN OIL-CARRYING CONDUIT, SAID DEVICE COMPRISING A TUBULAR BODY FORMED OF TWO OPPOSED SEMI-CYLINDRICALLY SHAPED SECTIONS OF PARAFFIN-REPELLENT ABRASION-RESISTANT RESILIENT POLYURETHANE RUBBER ADAPTED TO BE POSITIONED IN SAID CONDUIT CIRCUMFERENTIALLY DISPOSED ABOUT A CONNECTING ROD DISPOSED IN SAID CONDUIT FOR RECIPROCAL MOVEMENT THEREIN, EACH OF SAID SECTIONS OF
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |