Patent US2440144A successfully refreshed from Google Patents.
US2440144A
Expired / Lapsed
US
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Core pin for molding valve stems
Assignee: COMPOSITE RUBBER PRODUCTS Corp
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Filing: 1945-05-15
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Granted: 1948-04-20
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Expires: 1965-05-15
Abstract
No abstract record available.
Inventors
- 👤 Oakley W Hosking
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:50
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/02; B29C43/18; B29K; B29K2021/00; B29K2705/00; B29L; B29L2031/00; B29L2031/748; B29L2031/7506
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |