Patent US3740354A successfully refreshed from Google Patents.
US3740354A
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US
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Bowling ball core containing sponge rubber chips
Assignee: Phillips Petroleum Co
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Filing: 1971-01-25
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Granted: 1973-06-19
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Expires: 1991-01-25
Abstract
Abstract A BOWLING BALL COMPRISING AN EXTERIOR SHELL HAVING A SMOOTH OUTER ROLLING SURFACE AND AN INNER CORE, WHEREIN SAID CORE COMPRISES A BINDER OR MATRIX MATERIAL COMPRISING A VULCANIZED NATURAL OR SYNTHETIC RUBBER HAVING DIPERSED THEREIN A MULTIPLICITY OF DISCRETE CHIPS OF NATURAL OR SYNTHETIC SPONGE RUBBER. BOWLING BALLS CONTAINING THE CORES OF THE INVENTION ARE CHARACTERIZED BY IMPROVED DIMENSIONAL STABILITY AND IMPACT RESITANCE.
Inventors
- 👤 D Dearmont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:29
CPC Classifications
A; A63; A63B; A63B37/00; A63B37/0001; C; C08; C08L; C08L21/00; Y; Y10; Y10S; Y10S264/00; Y10S264/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |