Operator mounting step for track-laying vehicles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Aug 23, 1983
Grant Date -
N/A
app pub date -
May 11, 1981
filing date -
May 11, 1981
priority date (Note) -
Expired
status (Latency Note)
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Importance

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Abstract
An operator's mounting step structure for a crawler-tractor includes a step housing having a floor or bottom formed by a downwardly and outwardly inclined surface of a track-tensioner recoil spring housing. The surface of the housing inclines downwardly and outwardly and a primary step is spaced above an outer portion of this surface so as to leave a gap between the foot-engageable member and the surface to prevent dirt and mud and the like to gravitate down the surface of the housing and through the gap. The housing of the step structure further includes a top wall which has a forward upturned lip which forms a secondary step spaced vertically above the primary step. The top wall is curved downwardly and inwardly from the upturned lip thereof and it joins the recoil spring housing at an inward location of the downward and outwardly inclined surface.
First Claim
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Family
- No Family data available.
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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DEERE & COMPANY A CORP OF DE | MOLINE IL 61265 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Stillmunkes, Dean J | Dubuque, IA | 2 | 5 |
# of filed Patents : 2 Total Citations : 5 |
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Patent Citation Ranking
- 4 Citation Count
- B60R Class
- 0 % this patent is cited more than
- 42 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

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Oct 27, 2021 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY year of fee payment: 4 |
May 01, 2018 | I | Issuance | |
Apr 11, 2018 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Jan 08, 2015 | P | Published | |
Jul 29, 2014 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TAMARU, YUTAKA;KATSUYAMA, TAKESHI;REEL/FRAME:033514/0752 Owner name: NATIONAL UNIVERSITY CORPORATION MIE UNIVERSITY, JA Effective Date: Jul 29, 2014 |
Jan 29, 2013 | F | Filing | |
Feb 17, 2012 | PD | Priority Date |

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