US2637071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core for molds
Assignee: Ventura Tool Co
•
Filing: 1950-03-25
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Granted: 1953-05-05
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Expires: 1970-03-25
Abstract
No abstract record available.
Inventors
- 👤 William J Williams
- 👤 James W E Hanes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:16
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/26; B29C33/00; B29C33/12; B29C33/123; B29C70/00; B29C70/04; B29C70/26; B29K; B29K2021/00; B29L; B29L2023/00
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) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |