US2461836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foul ball indicator
Assignee: Individual
•
Filing: 1946-10-18
•
Granted: 1949-02-15
•
Expires: 1966-10-18
Abstract
No abstract record available.
Inventors
- 👤 Allen K Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:26
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/0002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1309105A
Cited
US1286254A
Cited
US1761317A
Cited
US1936828A
Cited
US2061973A
Cited
US2168644A
Cited
US2310163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-15 | 1952-08-16 | 1953-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-15 | 1956-08-16 | 1957-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-15 | 1960-08-16 | 1961-02-15 | $7700.00 | Window Closed / Lapsed |