Patent US3397892A successfully refreshed from Google Patents.
US3397892A
Expired / Lapsed
US
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Golf training aid
Assignee: Individual
•
Filing: 1965-07-02
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Granted: 1968-08-20
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Expires: 1985-07-02
Abstract
No abstract record available.
Inventors
- 👤 Walter A Stahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:43
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/36; A63B69/3608; A63B69/0057; A63B2225/00; A63B2225/09
Claims Analysis
Total Claims: 0
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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) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |