US3215432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tennis serve practice device
Assignee: Individual
•
Filing: 1961-12-13
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Granted: 1965-11-02
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Expires: 1981-12-13
Abstract
No abstract record available.
Inventors
- 👤 Robert H Lee
- 👤 John A Magnuson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:51
CPC Classifications
A; A63; A63B; A63B63/00; A63B24/00; A63B24/0021; A63B2024/0037; A63B2024/0046; A63B2024/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
FOR PRACTICING AND PERFECTING THE TENNIS SERVE, MEANS ACCURATELY SIMULATING THE INBOUNDS ERVICE REGION OF A REGULATION TENNIS COURT FOR PRACTICING THE TENNIS SERVE SAID MEANS COMPRISING A GENERALLY FLAT HORIZONTAL PLAYING SAID MEANS COMPRISING A GENERALLY FLAT HORIZONTAL PLAYING DEFINING A RIGHT SERVICE COURT SERVING POSITION FOR A FULL DIMENSIONED SIMULATED TENNIS COURT AND A ZONE DEFINING A LEFT SERVICE COURT SERVING POSITION FOR A FULL DIMENSIONED SIMULATED TENNIS COURT, A SHEET ARRANGED VERTICALLY OF SAID PLAYING SURFACE TO FORM A BALL STOP, SUPPORT MEANS FOR SAID SHEET, NET HEIGHT INDICATOR MEANS POSITIONED UPON A FORWARD SIDE OF SAID SHEET TO INDICATE THE NET HEIGHT OF A SIMULATED FULL SIZE TENNIS COURT, CENTER LINE INDICATOR MEANS POSITIONED UPON SAID FORWARD SIDE OF SAID SHEET TO INDICATE THE CENTER LINE OF A SIMULATED FULL-SIZE TENNIS COURT AS RESPECTS ONE OF SAID SERVICE POSITIONS AND TO INDICATE THE INBOUNDS SIDE LINE WITH RESPECT TO THE OTHER OF SAID SERVICE POSITIONS, ANOTHER CENTER LINE INDICATOR MEANS POSITIONED UPON SAID FORWARD SIDE OF SAID SHEET TO INDICATE THE CENTER LINE OF A SIMULATED FULL SIZE TENNIS COURT AS RESPECTS THE LAST NAMED SERVICE POSITION AND TO INDICATE THE INBOUNDS SIDE LINE WITH RESPECT TO THE FIRST
Claim 2
Dependent Claim
203 words
FOR PRACTICING AND PERFECTING THE TENNIS SERVE, MEANS ACCURATELY SIMULATING THE INBOUNDS ERVICE REGION OF A REGULATION TENNIS COURT FOR PRACTICING THE TENNIS SERVE SAID MEANS COMPRISING A GENERALLY FLAT HORIZONTAL PLAYING SAID MEANS COMPRISING A GENERALLY FLAT HORIZONTAL PLAYING DEFINING A RIGHT SERVICE COURT SERVING POSITION FOR A FULL DIMENSIONED SIMULATED TENNIS COURT AND A ZONE DEFINING A LEFT SERVICE COURT SERVING POSITION FOR A FULL DIMENSIONED SIMULATED TENNIS COURT, A SHEET ARRANGED VERTICALLY OF SAID PLAYING SURFACE TO FORM A BALL STOP, SUPPORT MEANS FOR SAID SHEET, NET HEIGHT INDICATOR MEANS POSITIONED UPON A FORWARD SIDE OF SAID SHEET TO INDICATE THE NET HEIGHT OF A SIMULATED FULL SIZE TENNIS COURT, CENTER LINE INDICATOR MEANS POSITIONED UPON SAID FORWARD SIDE OF SAID SHEET TO INDICATE THE CENTER LINE OF A SIMULATED FULL-SIZE TENNIS COURT AS RESPECTS ONE OF SAID SERVICE POSITIONS AND TO INDICATE THE INBOUNDS SIDE LINE WITH RESPECT TO THE OTHER OF SAID SERVICE POSITIONS, ANOTHER CENTER LINE INDICATOR MEANS POSITIONED UPON SAID FORWARD SIDE OF SAID SHEET TO INDICATE THE CENTER LINE OF A SIMULATED FULL SIZE TENNIS COURT AS RESPECTS THE LAST NAMED SERVICE POSITION AND TO INDICATE THE INBOUNDS SIDE LINE WITH RESPECT TO THE FIRST
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |