Patent US2933681A successfully refreshed from Google Patents.
US2933681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf practice device
Assignee: Individual
•
Filing: 1955-04-28
•
Granted: 1960-04-19
•
Expires: 1975-04-28
Abstract
No abstract record available.
Inventors
- 👤 Harry M Crain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:46
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/36; A63B69/3614; A63B2220/00; A63B2220/80; A63B2220/805
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1526337A
Cited
US2101076A
Cited
US1946290A
Cited
US2102166A
Cited
US2058211A
Cited
US2235188A
Cited
US2284850A
Cited
US2571974A
Cited
US2651022A
Cited
US2587775A
Cited
US2795273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |