US20040023727A1 - Golf training device - Google Patents
Golf training device Download PDFInfo
- Publication number
- US20040023727A1 US20040023727A1 US10/211,459 US21145902A US2004023727A1 US 20040023727 A1 US20040023727 A1 US 20040023727A1 US 21145902 A US21145902 A US 21145902A US 2004023727 A1 US2004023727 A1 US 2004023727A1
- Authority
- US
- United States
- Prior art keywords
- platform
- training device
- base
- golf training
- recess
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/36—Training appliances or apparatus for special sports for golf
- A63B69/3676—Training appliances or apparatus for special sports for golf for putting
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/36—Training appliances or apparatus for special sports for golf
- A63B69/3621—Contacting or non-contacting mechanical means for guiding the swing
- A63B69/36211—Mechanical guides guiding the club head end during the complete swing, e.g. rails
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/02—Games or sports accessories not covered in groups A63B1/00 - A63B69/00 for large-room or outdoor sporting games
- A63B71/023—Supports, e.g. poles
- A63B2071/024—Supports, e.g. poles with screws or pins in the earth
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
- A63B2071/0694—Visual indication, e.g. Indicia
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/36—Training appliances or apparatus for special sports for golf
- A63B69/3676—Training appliances or apparatus for special sports for golf for putting
- A63B69/3682—Visual means not attached to the body for aligning, positioning the trainee's head or for detecting head movement, e.g. by parallax
Definitions
- the present invention relates generally to a golf training device, and in particular to a golf training device having a player's attitude correcting device.
- a golf training device simulates a putting green of a golf course.
- a player may practice putting operation without actually playing in a real golf course.
- a conventional golf training device comprises a runway for golf balls and a putting green platform which forms a hole for receiving the golf ball moving through the runway.
- the overall structure of the conventional golf training device is simple and can be made portable whereby a player can practice putting at any desired location.
- the conventional golf training device provides a simulation of the putting green that allows a player to repeatedly practice putting only. There is no measure that a player can get feedback from the device regarding if his or her attitude is correct or not or how to correct his or her attitude.
- An object of the present invention is to provide a golf training device comprising a player's attitude correcting device.
- Another object of the present invention is to provide a golf training device comprising a correction wire for indicating the movement direction of a putted golf ball along the runway to allow a player to observe and get a visual feedback of his or her putting operation. The player may then modify his or her attitude in putting a ball based on the observation.
- the correction wire also helps the player to correct and improve his or her visual determination of the location and orientation of the ball hole in the putting green.
- a further object of the present invention is to provide a golf training device comprising a correction mirror which reflects and shows the image of a player when the player is putting a ball whereby the player can modify his or her attitude to get a good putting.
- Yet a further object of the present invention is to provide a golf training device that allows for automatic return of putted balls.
- a golf training device comprising a putting green platform having an incline extending from a lower end to an upper end forming a recess which a golf ball is destined for.
- a wall surrounds the incline of the platform for stopping movement of improperly hit golf balls.
- a tee base is spaced from the putting green platform and has a top surface.
- a runway is arranged between the tee base and the lower end of the incline of the putting green platform.
- a correction device includes a correction wire located above and extending from the base, through and substantially parallel to the runway, to the platform for forming an indication between the tee base and the recess of the platform.
- a mirror is attached to the top surface of the base for providing visual feedback to a player when the player is swinging a putter to hit a golf ball into the recess.
- the recess which the putted ball is destined for has depth varying from a large one to a small one in a direction away from the runway whereby a ball staying in the recess can be struck out of the recess through the small depth by being hit by a second ball and then returning back to the base.
- FIG. 1 is an exploded view of a golf training device constructed in accordance with the present invention
- FIG. 2 is a perspective view of the golf training device of the present invention
- FIG. 3 is a top view of the golf training device of the present invention.
- FIG. 4 is a side elevational view of the golf training device of the present invention with a player shown in phantom line putting a ball;
- FIG. 5 is a side elevational view of a putting green platform of the golf training device of the present invention.
- the platform 1 comprises an incline 11 extending from a lower end that is connected to a remote end of the runway 2 to an rounded upper, apex portion in which a circular recess 13 is defined.
- a U-shaped wall 12 surrounds the apex portion. The wall 12 extends beyond the top surface of the incline 11 for blocking golf balls.
- the tee base 3 comprises a board of a predetermined thickness having a top surface (not labeled) on which a level 32 is mounted for helping to level the tee base 3 .
- the golf training device further comprises a correcting device 4 comprising a correction mirror 33 mounted on the top surface of the tee base 3 and a correction wire 42 straightly extending between the tee base 3 and the platform 1 .
- An anchoring member 41 fixes an end of the correction wire 42 to each of the base 3 and the platform 1 .
- the anchoring member 41 has a leg (not labeled) tightly fit into a hole 14 , 31 defined in the wall 12 of the platform 1 and the base 3 whereby the correction wire 42 that is fixed between the anchoring members 41 extends above and through the base 3 , the runway 2 and the platform 1 in a manner substantially parallel to the runway 2 , serving as an indication of the direction from the base 3 to the circular recess 13 which the golf ball is destined for.
- the runway 2 comprises an elongate plate having opposite ends connected to the platform 1 and the base 3 .
- a golf ball (see FIG. 2 but not labeled) is movable along the runway 2 from the end adjacent the base 3 toward the platform 1 and eventually gets into the recess 13 .
- the runway 2 has a thickness at the end adjacent the platform 3 substantially the same as that of the lower end of the incline 11 of the platform 1 connected thereto whereby a smooth way is formed from the runway 2 toward the recess 13 .
- the correction wire 42 that connects between the base 3 and the platform 1 is resilient for accommodating tolerance therebetween when they are connected by the runway 2 .
- FIGS. 3 and 4 show the operation of the golf training device.
- a golf ball (not labeled) is placed on the runway 2 adjacent the base 3 .
- the golf ball is positioned substantially midway in the width of the runway 2 (that is the dimension of the runway 2 substantially perpendicular to that between the ends.)
- a player uses a putter to hit and drive the ball toward the recess 13 of the platform 1 along the runway 2 by following the correction wire 42 .
- the player may correct his or her attitude by observing the correction wire 42 until his or her eyesight, the correction wire 42 and the ball are coincident with each other.
- the player can modify his or her hand holding the putter in order to have the putted ball substantially following the correction wire 42 toward the recess 13 in next hits.
- the mirror 33 helps the player to determine if his or her acting in hitting the ball is correct. By repeating putting operation, the player may also find a most suitable way to swing the putter that leads to correct operation of the putter. Observing the mirror allows for the player's memorization of the correct action of playing the putter.
- the wall 12 helps to prevent golf balls that are not following a correct path toward the recess 13 from falling out of the platform 1 .
- the recess 13 has a depth that is reduced from a large one at an end close to the runway 2 toward a small one at an end away from the runway 2 .
- This when a first golf ball is already staying in the recess 13 , allows the player to hit the first golf ball with a second golf ball.
- the hit causes the first ball to get out of the recess 13 via the small depth end of the recess 13 and runs back to the base 3 by following the incline 11 of the platform 1 , if the hit is properly performed. Practicing such a hit improves the player's skill in putting a golf ball into the recess 13 .
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rehabilitation Tools (AREA)
- Golf Clubs (AREA)
Abstract
A golf training device includes a putting green platform having an incline extending from a lower end to an upper end forming a recess that a golf ball is destined for. A wall surrounds the incline of the platform for stopping movement of improperly hit golf balls. A tee base is spaced from the putting green platform and has a top surface. A runway is arranged between the tee base and the lower end of the incline of the putting green platform. A correction device includes a correction wire located above and extending from the base, through and substantially parallel to the runway, to the platform for forming an indication between the tee base and the recess of the platform. A mirror is attached to the top surface of the base for providing visual feedback to a player when the player is swinging a putter to hit a golf ball into the recess.
Description
- The present invention relates generally to a golf training device, and in particular to a golf training device having a player's attitude correcting device.
- A golf training device simulates a putting green of a golf course. A player may practice putting operation without actually playing in a real golf course. A conventional golf training device comprises a runway for golf balls and a putting green platform which forms a hole for receiving the golf ball moving through the runway. The overall structure of the conventional golf training device is simple and can be made portable whereby a player can practice putting at any desired location.
- The conventional golf training device, however, provides a simulation of the putting green that allows a player to repeatedly practice putting only. There is no measure that a player can get feedback from the device regarding if his or her attitude is correct or not or how to correct his or her attitude.
- Thus, it desired to improve the golf training device to provide a better solution of practicing golf.
- An object of the present invention is to provide a golf training device comprising a player's attitude correcting device.
- Another object of the present invention is to provide a golf training device comprising a correction wire for indicating the movement direction of a putted golf ball along the runway to allow a player to observe and get a visual feedback of his or her putting operation. The player may then modify his or her attitude in putting a ball based on the observation. The correction wire also helps the player to correct and improve his or her visual determination of the location and orientation of the ball hole in the putting green.
- A further object of the present invention is to provide a golf training device comprising a correction mirror which reflects and shows the image of a player when the player is putting a ball whereby the player can modify his or her attitude to get a good putting.
- Yet a further object of the present invention is to provide a golf training device that allows for automatic return of putted balls.
- To achieve the above objects, in accordance with the present invention, there is provided a golf training device comprising a putting green platform having an incline extending from a lower end to an upper end forming a recess which a golf ball is destined for. A wall surrounds the incline of the platform for stopping movement of improperly hit golf balls. A tee base is spaced from the putting green platform and has a top surface. A runway is arranged between the tee base and the lower end of the incline of the putting green platform. A correction device includes a correction wire located above and extending from the base, through and substantially parallel to the runway, to the platform for forming an indication between the tee base and the recess of the platform. A mirror is attached to the top surface of the base for providing visual feedback to a player when the player is swinging a putter to hit a golf ball into the recess. The recess which the putted ball is destined for has depth varying from a large one to a small one in a direction away from the runway whereby a ball staying in the recess can be struck out of the recess through the small depth by being hit by a second ball and then returning back to the base.
- The present invention will be apparent to those skilled in the art by reading the following description of a preferred embodiment thereof, with reference to the attached drawings, in which:
- FIG. 1 is an exploded view of a golf training device constructed in accordance with the present invention;
- FIG. 2 is a perspective view of the golf training device of the present invention;
- FIG. 3 is a top view of the golf training device of the present invention;
- FIG. 4 is a side elevational view of the golf training device of the present invention with a player shown in phantom line putting a ball; and
- FIG. 5 is a side elevational view of a putting green platform of the golf training device of the present invention.
- With reference to the drawings and in particular to FIGS. 1 and 2, a golf training device constructed in accordance with the present invention comprises a putting
green platform 1 and atee base 3 with anelongate runway 2 connected between theplatform 1 and thebase 3. Theplatform 1 comprises anincline 11 extending from a lower end that is connected to a remote end of therunway 2 to an rounded upper, apex portion in which acircular recess 13 is defined. AU-shaped wall 12 surrounds the apex portion. Thewall 12 extends beyond the top surface of theincline 11 for blocking golf balls. - The
tee base 3 comprises a board of a predetermined thickness having a top surface (not labeled) on which alevel 32 is mounted for helping to level thetee base 3. The golf training device further comprises a correctingdevice 4 comprising acorrection mirror 33 mounted on the top surface of thetee base 3 and acorrection wire 42 straightly extending between thetee base 3 and theplatform 1. Ananchoring member 41 fixes an end of thecorrection wire 42 to each of thebase 3 and theplatform 1. The anchoringmember 41 has a leg (not labeled) tightly fit into ahole wall 12 of theplatform 1 and thebase 3 whereby thecorrection wire 42 that is fixed between the anchoringmembers 41 extends above and through thebase 3, therunway 2 and theplatform 1 in a manner substantially parallel to therunway 2, serving as an indication of the direction from thebase 3 to thecircular recess 13 which the golf ball is destined for. - The
runway 2 comprises an elongate plate having opposite ends connected to theplatform 1 and thebase 3. A golf ball (see FIG. 2 but not labeled) is movable along therunway 2 from the end adjacent thebase 3 toward theplatform 1 and eventually gets into therecess 13. Therunway 2 has a thickness at the end adjacent theplatform 3 substantially the same as that of the lower end of theincline 11 of theplatform 1 connected thereto whereby a smooth way is formed from therunway 2 toward therecess 13. - The
correction wire 42 that connects between thebase 3 and theplatform 1 is resilient for accommodating tolerance therebetween when they are connected by therunway 2. - FIGS. 3 and 4 show the operation of the golf training device. A golf ball (not labeled) is placed on the
runway 2 adjacent thebase 3. The golf ball is positioned substantially midway in the width of the runway 2 (that is the dimension of therunway 2 substantially perpendicular to that between the ends.) A player uses a putter to hit and drive the ball toward therecess 13 of theplatform 1 along therunway 2 by following thecorrection wire 42. Before hitting the ball, the player may correct his or her attitude by observing thecorrection wire 42 until his or her eyesight, thecorrection wire 42 and the ball are coincident with each other. By observing the path of the putted ball with reference to thecorrection wire 42, the player can modify his or her hand holding the putter in order to have the putted ball substantially following thecorrection wire 42 toward therecess 13 in next hits. - The
mirror 33 helps the player to determine if his or her acting in hitting the ball is correct. By repeating putting operation, the player may also find a most suitable way to swing the putter that leads to correct operation of the putter. Observing the mirror allows for the player's memorization of the correct action of playing the putter. - The
wall 12 helps to prevent golf balls that are not following a correct path toward therecess 13 from falling out of theplatform 1. - With reference to FIG. 5, the
recess 13 has a depth that is reduced from a large one at an end close to therunway 2 toward a small one at an end away from therunway 2. This, when a first golf ball is already staying in therecess 13, allows the player to hit the first golf ball with a second golf ball. The hit causes the first ball to get out of therecess 13 via the small depth end of therecess 13 and runs back to thebase 3 by following theincline 11 of theplatform 1, if the hit is properly performed. Practicing such a hit improves the player's skill in putting a golf ball into therecess 13. - Although the present invention has been described with reference to the preferred embodiment thereof, it is apparent to those skilled in the art that a variety of modifications and changes may be made without departing from the scope of the present invention which is intended to be defined by the appended claims.
Claims (8)
1. A golf training device comprising:
a putting green platform comprising an incline extending from a lower end to an upper end forming a recess;
a tee base spaced from the putting green platform and having a top surface;
a runway connected between the tee base and the lower end of the incline of 6 the putting green platform; and
a correcting device comprising a correction wire located above and extending from the base, through and substantially parallel to the runway, to the platform for forming an indication between the tee base and the recess of the platform.
2. The golf training device as claimed in claim 1 , wherein the correction wire is resilient.
3. The golf training device as claimed in claim 1 , wherein the correction device comprises two anchoring members respectively fixed to the base and the platform for securing opposite ends of the correction wire.
4. The golf training device as claimed in claim 1 , wherein the correction device comprises a mirror attached to the top surface of the tee base.
5. The golf training device as claimed in claim 1 , further comprising a level mounted to the top surface of the tee base.
6. The golf training device as claimed in claim 1 , wherein the recess is circular.
7. The golf training device as claimed in claim 1 , wherein the recess has a depth varying a large value at an end close to the runway to a small value at an end away from the runway.
8. The golf training device as claimed in claim 1 , further comprising a wall surrounding the incline of the platform.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/211,459 US6679783B1 (en) | 2002-08-05 | 2002-08-05 | Golf training device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/211,459 US6679783B1 (en) | 2002-08-05 | 2002-08-05 | Golf training device |
Publications (2)
Publication Number | Publication Date |
---|---|
US6679783B1 US6679783B1 (en) | 2004-01-20 |
US20040023727A1 true US20040023727A1 (en) | 2004-02-05 |
Family
ID=30000147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/211,459 Expired - Fee Related US6679783B1 (en) | 2002-08-05 | 2002-08-05 | Golf training device |
Country Status (1)
Country | Link |
---|---|
US (1) | US6679783B1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050181885A1 (en) * | 2003-07-23 | 2005-08-18 | Mr. Richard Yamanaka | Apparatus For Practicing The Golf Putting Stroke |
AU2004100843A4 (en) * | 2004-05-21 | 2004-11-04 | Strokebuilder Pty Ltd | Golf Putting and Training Aid |
US6997817B1 (en) | 2004-11-09 | 2006-02-14 | Joseph Consiglio | Putter alignment tool for use in establishing a correct line of putting motion |
US20070099716A1 (en) * | 2005-10-31 | 2007-05-03 | Du Plessis Jean-Pierre | Golf training accessory |
US20070293337A1 (en) * | 2006-06-16 | 2007-12-20 | Payne James S | Putting practice apparatus |
US20100197421A1 (en) * | 2009-02-05 | 2010-08-05 | Buchenau Zachary J | Putting aid |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1612291A (en) * | 1925-12-29 | 1926-12-28 | George P Jackson | Indoor golf game |
US1759156A (en) * | 1926-01-07 | 1930-05-20 | Fred O Fish | Golf practice apparatus or game |
US2144439A (en) * | 1937-01-16 | 1939-01-17 | Elmer L Duffy | Golf practice and amusement apparatus |
US2869875A (en) * | 1955-10-28 | 1959-01-20 | Steenson William | Golf practice game |
US3424463A (en) * | 1966-12-29 | 1969-01-28 | Gerald G Matthews | Golf ball putting game |
US3526405A (en) * | 1968-07-26 | 1970-09-01 | George H Morris | Golfing target including score area defining rings encased in flexible sleeves |
US3584877A (en) * | 1969-01-13 | 1971-06-15 | Raymond J Florian | Golf game |
GB1290670A (en) * | 1969-02-22 | 1972-09-27 | ||
US3604711A (en) * | 1969-02-27 | 1971-09-14 | George B Hansburg | Golf-putting guide |
US3762718A (en) * | 1972-03-09 | 1973-10-02 | J Culley | Golf putting practice device |
GB1385004A (en) * | 1972-07-18 | 1975-02-26 | Coleman D | Golf practising apparatus |
US3843136A (en) * | 1973-09-17 | 1974-10-22 | F Buenzle | Golf practice and amusement apparatus |
JPS5085374U (en) * | 1973-12-06 | 1975-07-21 | ||
US3934874A (en) * | 1975-04-07 | 1976-01-27 | Henderson Frank D | Golf putting aid |
US4805912A (en) * | 1987-07-22 | 1989-02-21 | H&F Enterprises | Golf putting teaching aid |
US4828267A (en) * | 1988-01-07 | 1989-05-09 | Ray Goodrich | Putting practicing device |
US4783075A (en) * | 1988-03-09 | 1988-11-08 | Command Automation, Inc. | Golf practice putting device |
US5102141A (en) * | 1989-07-17 | 1992-04-07 | Mulay Plastics Inc. | Golf putting practice device |
US5042815A (en) * | 1991-03-12 | 1991-08-27 | Harold Sutton | Golf swing alignment device |
US5209484A (en) * | 1991-11-14 | 1993-05-11 | Randall Charles R | Golf putting improvement and teaching apparatus and method |
US5294124A (en) * | 1992-04-17 | 1994-03-15 | Florian Raymond J | Golfer's putting practice device |
US5431403A (en) * | 1994-02-09 | 1995-07-11 | Pelz; David T. | Golf putting practice device with perfect putting surface |
US5630719A (en) * | 1995-06-29 | 1997-05-20 | Franklin; Terry W. | Golf putting teaching aid |
US5692967A (en) * | 1996-07-12 | 1997-12-02 | Guyer; Donald M. | Golf practice device |
US5913732A (en) * | 1997-03-21 | 1999-06-22 | Kwakkel; Klaas | Golf putting vertical alignment and training aid |
US6048273A (en) * | 1998-05-14 | 2000-04-11 | Pure Stroke, Inc. | Putting stroke teaching aid apparatus |
-
2002
- 2002-08-05 US US10/211,459 patent/US6679783B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US6679783B1 (en) | 2004-01-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100694855B1 (en) | Putting trainning equipment | |
US7112146B2 (en) | Putting practice and training device | |
JPH04241886A (en) | Aid and training device for golf putting | |
WO2006062310A1 (en) | Apparatus for putting correcting and training | |
KR20190082165A (en) | Golf ball marking device | |
JP2009508624A (en) | Golf putting training equipment | |
KR19980033167A (en) | Golf tee fasteners | |
US8517853B2 (en) | Training system and method of using the same | |
US7238118B1 (en) | Foldable golf swing training aid for use by a right-handed golfer and a left-handed golfer | |
US6514151B2 (en) | Training device for golfers | |
US20090227388A1 (en) | Golf Putting Teaching Device and Method | |
US20050288120A1 (en) | Dual sport swing training aid and method of using | |
US6755751B2 (en) | Putting trainer device and method | |
US7070520B1 (en) | Sports training device for hitting a ball | |
US6679783B1 (en) | Golf training device | |
US4786057A (en) | Golf swing training device | |
US6939238B2 (en) | Golf putting training device | |
US7140971B2 (en) | Practice putting and ball retrieving device | |
US9561422B1 (en) | Golf swing training apparatus | |
US7494421B2 (en) | System, method, and apparatus for athletic swing training | |
US20050261076A1 (en) | Golf putting and training aid | |
US5028051A (en) | Putting practice device | |
KR200253447Y1 (en) | Putting trainer of golf | |
KR200273218Y1 (en) | Green grade measuring instrument attached to golf putter | |
KR200240630Y1 (en) | Leveler attached golf shdes |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20080120 |