Patent US2777897A successfully refreshed from Google Patents.
US3136485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-loading liquid fertilizer spreader
Assignee: Individual
•
Filing: 1963-01-08
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Granted: 1964-06-09
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Expires: 1983-01-08
Abstract
No abstract record available.
Inventors
- 👤 Paul M Bellows
- 👤 Joy E Harlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:10
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/001
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
123 words
IN APPARATUS OF THE CHARACTER DESCRIBED INCLUDING A TANK HAVING A FIRST OPENING THEREIN FOR FILLING THE TANK OR FOR DISCHARGING THE CONTENTS THEREOF AND A SECOND OPENING FOR ADMITTING AIR TO THE INTERIOR OF THE TANK AND PUMP MEANS FOR DRAWING AIR FROM THE INTERIOR OF THE TANK; THE IMPROVEMENT COMPRISING, A FIRST VALVE FOR SAID FIRST OPENING AND A NORMALLY CLOSED VALVE FOR SAID SECOND OPENING, FIRST MANUALLY OPERABLE MEANS FOR OPENING AND CLOSING SAID FIRST VALVE, SECOND MEANS FOR OPENING SAID NORMALLY CLOSED VALVE, MEANS MOUNTING SAID SECOND MEANS FOR SELECTIVE MOVEMENT INTO POSITION FOR OPENING SAID NORMALLY CLOSED VALVE UPON OPENING OF SAID FIRST VALVE TO ADMIT AIR TO THE INTERIOR OF THE TANK WHILE DRAINING THE CONTENTS THEREOF.
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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |