Patent US3260003A successfully refreshed from Google Patents.
US3260003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulldozer or like implement for attachment to a tractor
Assignee: Individual
•
Filing: 1963-06-04
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Granted: 1966-07-12
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Expires: 1983-06-04
Abstract
No abstract record available.
Inventors
- 👤 Rolfe Colin Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:41
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7604; E02F3/96; E02F3/961
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A TRACTOR-MOUNTED IMPLEMENT INCLUDING: A TRACTOR; REARWARDLY EXTENDING POWER-OPERATED LIFTING ARMS ON SAID TRACTOR; A FIRST FRAME INCLUDING A PAIR OF CARRYING ARMS RIGIDLY CONNECTED TOGETHER AND LYING ONE ON EITHER SIDE OF SAID TRACTOR; A WORKING HEAD MOUNTED ON SAID FIRST FRAME IN FRONT OF SAID TRACTOR; A REAR FRAME RIGIDLY ATTACHED FOR UNITARY MOVEMENT WITH SAID LIFTING ARMS; A DETACHABLE BUT RIGID CONNECTION BETWEEN SAID FIRST FRAME AND SAID REAR FRAME, A TRANSVERSE TOOL BAR PIVOTALLY ATTACHED TO SAID REAR FRAME, A TRANSVERSE TOOL BAR PIVOTALLY ATTACHED TOOL BAR; AND CORRESPONDINGLY SPACED ATTACHMENT MEANS ON SAID WORKING HEAD SUITED TO ENGAGE SAID TOOL ATTACHMENT MEANS.
Claim 2
Dependent Claim
107 words
A TRACTOR-MOUNTED IMPLEMENT INCLUDING: A TRACTOR; REARWARDLY EXTENDING POWER-OPERATED LIFTING ARMS ON SAID TRACTOR; A FIRST FRAME INCLUDING A PAIR OF CARRYING ARMS RIGIDLY CONNECTED TOGETHER AND LYING ONE ON EITHER SIDE OF SAID TRACTOR; A WORKING HEAD MOUNTED ON SAID FIRST FRAME IN FRONT OF SAID TRACTOR; A REAR FRAME RIGIDLY ATTACHED FOR UNITARY MOVEMENT WITH SAID LIFTING ARMS; A DETACHABLE BUT RIGID CONNECTION BETWEEN SAID FIRST FRAME AND SAID REAR FRAME, A TRANSVERSE TOOL BAR PIVOTALLY ATTACHED TO SAID REAR FRAME, A TRANSVERSE TOOL BAR PIVOTALLY ATTACHED TOOL BAR; AND CORRESPONDINGLY SPACED ATTACHMENT MEANS ON SAID WORKING HEAD SUITED TO ENGAGE SAID TOOL ATTACHMENT MEANS.
References Cited (Backward Citations)
US376448A
Cited
US1535384A
Cited
US1831222A
Cited
US2694267A
Cited
US2473357A
Cited
FR1071026A
Cited
US2766965A
Cited
US2749631A
Cited
GB761394A
Cited
DE1096835B
Cited
US2862315A
Cited
US2883776A
Cited
US2979839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |