US3104108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Practice apparatus for developing a correct golf stroke
Assignee: Individual
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Filing: 1961-05-03
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Granted: 1963-09-17
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Expires: 1981-05-03
Abstract
No abstract record available.
Inventors
- 👤 Russell R Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:52
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/36; A63B69/3623; A63B69/3621; A63B69/36211; A63B69/3676; A63B71/00; A63B71/06; A63B2071/0694; A63B69/3661; A63B69/3685
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
145 words
GOLF PRACTICE APPARATUS, COMPRISING A GOLF CLUB; A SINGLE GUIDE PLATE RIGIDLY ATTACHED TO AND DEPENDING FROM THE BOTTOM OF THE CLUB HEAD, TRANSVERSELY THEREOF AND SUBSTANTIALLY PERPENDICULARLY THERETO, SAID HEAD AND PLATE BEING EACH POSITIONED INTERMEDIATE THE LENGTH OF THE OTHER; AN ELONGATE GUIDEWAY STRUCTURE HAVING PARALLEL UPPER GUIDE SURFACES WHICH ARE RECTILINEAR THROUGHOUT THE GREATER PART OF THEIR LENGTHS AND WHICH ARE SEPARATED BY AN ELONGATE, VERTICAL RECTILINEAR SLOT FOR RECEIVING SAID GUIDE PLATE AND FOR GUIDING IT ALONG A RECTILINEAR PATH AS THE CLUB IS SWUNG, SAID SLOT BEING ONLY SLIGHTLY WIDER THAN THE THICKNESS OF SAID PLATE; AND GUIDE MEANS ON SAID CLUB HEAD AND EXTENDING FROM OPPOSITE SIDES OF SAID PLATE FOR COOPERATING WITH SAID UPPER GUIDE SURFACES OF SAID GUIDEWAY FOR ENABLING A PRACTICE GOLFER TO KEEP SAID PLATE FROM BINDING IN THE SLOT AS THE CLUB IS SWUNG.
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) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |