US2471610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable practice ball bat
Assignee: Individual
•
Filing: 1946-10-25
•
Granted: 1949-05-31
•
Expires: 1966-10-25
Abstract
No abstract record available.
Inventors
- 👤 Carl A Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:16
CPC Classifications
A; A63; A63B; A63B59/00; A63B59/50; A63B59/58; A63B2059/581; A63B2102/00; A63B2102/18; A63B60/00; A63B60/06; A63B60/32; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32975; Y10T403/32983
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) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |