US3297292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mine prop
Assignee: Individual
•
Filing: 1965-11-03
•
Granted: 1967-01-10
•
Expires: 1985-11-03
Abstract
No abstract record available.
Inventors
- 👤 Paurat Friedrich-Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:44
CPC Classifications
E; E21; E21D; E21D15/00; E21D15/14; E21D15/16; E21D11/00; E21D11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A YIELDABLE MINE PROP COMPRISING AN ELONGATED SOLID BODY OF A COMPRESSIBLE MATERIAL; AN ELONGATED HOLLOWPROFILE MEMBER COMPOSED OF A MATERIAL SUBSTANTIALLY MORE RIGID THAN THAT OF SAID BODY OF A CROSS-SECTIONAL AREA LESS THAN THAT OF SAID BODY AND FORCED INTO THE LATTER AT ONE END THEREOF WHEREBY THE MATERIAL OF SAID BODY RESISTS FURTHER DISPLACEMENT OF SAID MEMBER INTO SAID BODY, AND AN ELONGATED FLEXIBLE ELEMENT WRAPPED AROUND AT LEAST
Claim 2
Dependent Claim
72 words
A YIELDABLE MINE PROP COMPRISING AN ELONGATED SOLID BODY OF A COMPRESSIBLE MATERIAL; AN ELONGATED HOLLOWPROFILE MEMBER COMPOSED OF A MATERIAL SUBSTANTIALLY MORE RIGID THAN THAT OF SAID BODY OF A CROSS-SECTIONAL AREA LESS THAN THAT OF SAID BODY AND FORCED INTO THE LATTER AT ONE END THEREOF WHEREBY THE MATERIAL OF SAID BODY RESISTS FURTHER DISPLACEMENT OF SAID MEMBER INTO SAID BODY, AND AN ELONGATED FLEXIBLE ELEMENT WRAPPED AROUND AT LEAST
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |