US3313359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for thermally working minerals
Assignee: Union Carbide Canada Ltd
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Filing: 1964-04-23
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Granted: 1967-04-11
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Expires: 1984-04-23
Abstract
No abstract record available.
Inventors
- 👤 John W Ross
- 👤 Donald R Boynton
- 👤 Cornelius S Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:57
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
87 words
APPARATUS FOR SUPPLYING AIR AND PROCESS FLUIDS TO A ROCK-WORKING BLOWPIPE COMPRISING A FLEXIBLE HOSE HAVING AN INLET AND OUTLET, A BLOWPIPE CONNECTED TO THE OUTLET END OF SAID HOSE, A PLURALITY OF PROCESS FLUID HOSES EXTENDING FROM SAID BLOWPIPE THROUGH SAID HOSE TO A SOURCE OF SAID PROCESS FLUIDS; AND A CABLE FIXED TO THE BLOWPIPE EXTENDING THROUGH SAID HOSE AND ANCHORED OUTSIDE OF SAID HOSE SO THAT SAID CABLE CARRIES THE MAJOR PORTION OF THE BLOWPIPE WEIGHT WHEN SAID BLOWPIPE IS SUSPENDED FROM SAID HOSE.
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) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |