Frame for draining ditches
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 18, 1984
Grant Date -
N/A
app pub date -
Dec 9, 1982
filing date -
Dec 15, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A frame formed of metal, for draining ditches, comprising two downward pointing legs extending in parallel spaced relationship forming between them a channel having the material in the upper region of the wall of the ditch formed integrally with it therein said legs being interconnected with each other via a web the upper surface of which forms an abutment area for a ditch covering, and a leg extending upwards from the web for holding the channel covering laterally, with the two lower legs, in particular, being provided with several recesses at the undersides thereof leaving between them projections with the recesses and projections of the one lower leg being respectively arranged to abut at least in part or at least approximately the gaps of the other lower leg.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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ACO SEVERIN AHLMANN BMGH & CO KG A CORP OF GERMANY | Not Provided |
International Classification(s)

- 1982 Application Filing Year
- E01C Class
- 57 Applications Filed
- 0 Patents Issued To-Date
- 0 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Karbstein, Peter | Datgen, DE | 4 | 109 |
# of filed Patents : 4 Total Citations : 109 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 33 Citation Count
- E01C Class
- 0 % this patent is cited more than
- 41 Age
Forward Cite Landscape
- No Forward Cites to Display

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

Legal Events
Date | Code | Event | Description |
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Apr 23, 1996 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Mar 25, 1996 | SULP | SURCHARGE FOR LATE PAYMENT | |
Mar 25, 1996 | FPAY | FEE PAYMENT | year of fee payment: 12 |
Dec 04, 1995 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
Feb 19, 1992 | FPAY | FEE PAYMENT | year of fee payment: 8 |
Dec 24, 1987 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Dec 01, 1987 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
Sep 18, 1984 | I | Issuance | |
Jul 18, 1984 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Jan 10, 1983 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KARBSTEIN, PETER;REEL/FRAME:004108/0804 Owner name: ACO SEVERIN AHLMANN BMGH & CO. KG., A CORP. OF GER Effective Date: Jan 10, 1983 |
Dec 09, 1982 | F | Filing | |
Dec 15, 1981 | PD | Priority Date |

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