Patent US3303799A successfully refreshed from Google Patents.
US3303799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Row shaper
Assignee: Individual
•
Filing: 1964-10-15
•
Granted: 1967-02-14
•
Expires: 1984-10-15
Abstract
No abstract record available.
Inventors
- 👤 Britt Amos Edward Boyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:24
CPC Classifications
A; A01; A01B; A01B29/00; A01B13/00; A01B13/02; A01M; A01M21/00; A01M21/04; A01M21/043
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
149 words
A DEVICE FOR APPLYING AN AGRICULTURAL CHEMICAL TO SOIL COMPRISING A RECTANGULAR SHAPED FRAME HAVING FRONT, REAR AND SIDE MEMBERS, A PIVOTAL CARRIAGE ATTACHED TO SAID FRAME AND MEANS OPERATIVELY CONNECTED TO SAID CARRIAGE AND SAID FRAME FOR RAISING AND LOWERING SAID FRAME, AN APPLICATOR ROLLER CARRIED BY THE FRAME BETWEEN THE FRONT AND REAR MEMBERS THEREOF AND BEING ROTATABLE ABOUT AN AXIS PARALLEL TO SAID FRONT AND REAR MEMBERS, SAID APPLICATOR ROLLER COMPRISING A CENTRALLY DISPOSED CYLINDRICAL MEMBER MERGING INTO OUTWARDLY FLARING WALLS, EACH OF SAID WALLS MERGING INTO AN OUTER CYLINDRICAL MEMBER, EACH OF SAID OUTER CYLINDRICAL MEMBERS MERGING INTO A CONICAL SHAPED MEMBER, MEANS FOR DISPENSING SAID CHEMICAL TO THE PERIPHERAL SURFACE OF SAID OUTER CYLINDRICAL MEMBERS AND SAID CONICAL MEMBERS WHEREBY PASSAGE OF THE APPLICATOR ROLLER OVER THE SOIL PERMITS APPLICATION OF THE CHEMICAL TO THE SOIL WITHOUT SUBSTANTIAL CONTACT THEREOF WITH VEGETATION GROWING THEREIN.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |