Patent US2335108A successfully refreshed from Google Patents.
Patent US3275087A successfully refreshed from Google Patents.
US3275087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable disc harrow
Assignee: HARRIMAN Manufacturing CO
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Filing: 1965-02-03
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Granted: 1966-09-27
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Expires: 1985-02-03
Abstract
No abstract record available.
Inventors
- 👤 William H Petitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:06
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/14; A01B63/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
AN ADJUSTABLE DISC HARROW, COMPRISING: (A) A TOOL BAR; (B) FIRST AND SECOND TIE ROD BRACKETS MOUNTED ON SAID TOOL BAR; (C) LINKAGE BRACKET MEANS MOUNTED ON SAID TOOL BAR; (D) FIRST AND SECOND DISC GANG ASSEMBLY MEANS MOUNTED ON SAID TOOL BAR, SAID GANG ASSEMBLY MEANS INCLUDING FIRST AND SECOND KINGPINS SET AT PREDETERMINED ANGLES FROM VERTICAL; AND (E) FIRST AND SECOND TIE RODS HAVING FIRST ENDS ATTACHED TO SAID FIRST AND SECOND DISC GANG ASSEMBLY MEANS, RESPECTIVELY, AND SECOND ENDS FOR SELECTIVELY ATTACHING TO SAID FIRST AND SECOND TIE ROD BRACKETS AND SAID LINKAGE BRACKET MEANS RESPECTIVELY.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |