Patent US2439966A successfully refreshed from Google Patents.
US2439966A
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Injection molding
Assignee: WATSON STILLMAN CO
•
Filing: 1943-06-25
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Granted: 1948-04-20
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Expires: 1963-06-25
Abstract
No abstract record available.
Inventors
- 👤 Richard W Dinzl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:17
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/72; Y; Y10; Y10S; Y10S264/00; Y10S264/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1997263A
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US2111857A
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US2341617A
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US2202140A
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US2325637A
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US2304958A
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US2411254A
Cited
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 |