US2833630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for leaching
Assignee: Harvey Machine Co Inc
•
Filing: 1954-01-21
•
Granted: 1958-05-06
•
Expires: 1974-01-21
Abstract
No abstract record available.
Inventors
- 👤 Loevenstein Hirsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:53
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/02; B; B01; B01D; B01D11/00; B01D11/02; B01D11/0215; B01D11/0223; B01D11/0242; B01D11/0246; B01D2011/005; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
APPARATUS OF THE CHARACTER DESCRIBED INCLUDING, A PLURALITY OF LIKE VERTICALLY DISPOSED LEACHING UNITS ON A COMMON CENTRAL AXIS SPACED ONE ABOVE THE OTHER, EACH UNIT INCLUDING AN ELONGATE VERTICALLY DISPOSED DRAFT TUBE WITH A SUBSTANTIALLY CYLINDRICAL OUTER WAIL, SAID TUBE BEING OPEN AT ITS UPPER AND LOWER ENDS AND BEING ADAPTED TO RECEIVE MATERIAL AT THE UPPER END AND TO DISCHARGE IT FROM THE LOWER END, AND A VERTICALLY DISPOSED CYLINDRICAL BODY SURROUNDING THE TUBE, THE BODY BEING CLOSED AT ITS LOWER END BY A BOTTOM AND ADAPTED TO RECEIVE MATERIAL FROM THE TUBE AND DIRECT IT FROM THE BOTTOM OF THE TUBE TOWARD THE UPPER END OF THE BODY, AND MEANS CONDUCTING MATERIAL
Claim 2
Dependent Claim
115 words
APPARATUS OF THE CHARACTER DESCRIBED INCLUDING, A PLURALITY OF LIKE VERTICALLY DISPOSED LEACHING UNITS ON A COMMON CENTRAL AXIS SPACED ONE ABOVE THE OTHER, EACH UNIT INCLUDING AN ELONGATE VERTICALLY DISPOSED DRAFT TUBE WITH A SUBSTANTIALLY CYLINDRICAL OUTER WAIL, SAID TUBE BEING OPEN AT ITS UPPER AND LOWER ENDS AND BEING ADAPTED TO RECEIVE MATERIAL AT THE UPPER END AND TO DISCHARGE IT FROM THE LOWER END, AND A VERTICALLY DISPOSED CYLINDRICAL BODY SURROUNDING THE TUBE, THE BODY BEING CLOSED AT ITS LOWER END BY A BOTTOM AND ADAPTED TO RECEIVE MATERIAL FROM THE TUBE AND DIRECT IT FROM THE BOTTOM OF THE TUBE TOWARD THE UPPER END OF THE BODY, AND MEANS CONDUCTING MATERIAL
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) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |