US3664532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propulsion means for ball retrieving apparatus
Assignee: Individual
•
Filing: 1970-07-24
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Granted: 1972-05-23
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Expires: 1990-07-24
Abstract
Abstract A BALL RETRIEVING MECHANISM IN THE FORM OF A SELF PROPELLED VEHICLE HAVING A TRICYCLE TYPE RUNNING GEAR WITH THE BALL GATHERING AND RETRIEVING MEANS ARRANGED BETWEEN THE FRONT WHEEL AND THE REAR DRIVING WHEELS SO THAT THE BALLS ARE PICKED UP BEFORE THE REAR DRIVING WHEELS PASS OVER THE GROUND AREA FROM WHICH THE BALLS ARE RECOVERED.
Inventors
- 👤 August W Gustafson
- 👤 Edna L Gustafson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:09
CPC Classifications
A; A63; A63B; A63B47/00; A63B47/02; A63B47/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |