US2470052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball return mechanism for bowling pin setting machines
Assignee: AMF Inc
•
Filing: 1942-10-30
•
Granted: 1949-05-10
•
Expires: 1962-10-30
Abstract
No abstract record available.
Inventors
- 👤 Rupert E Rundell
- 👤 Gustaf E Hagquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:02
CPC Classifications
A; A63; A63D; A63D5/00; A63D5/02; A63D5/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1073431A
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US1068131A
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US1190650A
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US1468212A
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US1816405A
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US2060569A
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US1987000A
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US1994411A
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US2207643A
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US2232545A
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US2319925A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |