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Patent US2499029A successfully refreshed from Google Patents.
US2499029A
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US
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Casting dart
Assignee: Individual
•
Filing: 1945-08-03
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Granted: 1950-02-28
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Expires: 1965-08-03
Abstract
No abstract record available.
Inventors
- 👤 Robert M Mcelroy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:25
CPC Classifications
F; F42; F42B; F42B6/00; F42B6/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US619762A
Cited
US893303A
Cited
GB191517363A
Cited
US1651499A
Cited
FR702960A
Cited
US1893787A
Cited
US2021792A
Cited
US2076357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |