US2509528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for covering balls
Assignee: Individual
•
Filing: 1947-01-30
•
Granted: 1950-05-30
•
Expires: 1967-01-30
Abstract
No abstract record available.
Inventors
- 👤 Roberts Robert Eldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:32
CPC Classifications
B; B29; B29D; B29D22/00; B29D22/04; B29C; B29C63/00; B29C63/0073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1415438A
Cited
US1446885A
Cited
US1593211A
Cited
US2117400A
Cited
US2299544A
Cited
US2279921A
Cited
US2238119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-29 | 1953-11-28 | 1954-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-29 | 1957-11-28 | 1958-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-29 | 1961-11-28 | 1962-05-30 | $7700.00 | Window Closed / Lapsed |