Patent USRE28320E successfully refreshed from Google Patents.
USRE28320E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning of the interior of storage tanks
Assignee: —
•
Filing: 1972-11-19
•
Granted: 1975-01-28
•
Expires: 1992-11-19
Abstract
Abstract 1. APPARATUS FOR CLEANING THE INTERIOR OF A TANK COMPRISING A MOUNTING ADAPTED TO BE CARRIED BY THE TOP OF SAID TANK AND EXTENDING THEREIN, A TANK-CLEANING MACHINE CONNECTED TO SAID MOUNTING, MEANS FOR INTRODUCING A FLOW OF LIQUID TO SAID MACHINE FROM OUTSIDE SAID TANK AND PIVOT MEANS INCLUDING A ROTARY PIPE COUPLING PERMITTING SAID MACHINE TO BE MOVABLE BETWEEN AN INOPERATIVE POSITION WHERE IT CAN BE HOUSED WITHIN SAID TANK AND AN OPERATIVE POSITION WHERE IT EXTENDS INTO THE TANK.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:23
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/08; B08B9/093; B08B9/0936
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |