US2857162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bowling ball retarding device
Assignee: AMF Inc
•
Filing: 1955-11-29
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Granted: 1958-10-21
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Expires: 1975-11-29
Abstract
No abstract record available.
Inventors
- 👤 Zuercher John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:00
CPC Classifications
A; A63; A63D; A63D5/00; A63D5/02; A63D5/023; A63D5/026; F; F16; F16D; F16D49/00; F16D49/08; F16D65/00; F16D65/02; F16D65/04; F16D65/06; F16D65/065; F16D65/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2597072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |