Patent US3301390A successfully refreshed from Google Patents.
US2689376A
Expired / Lapsed
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Method and apparatus for injection molding
Assignee: Individual
•
Filing: 1948-07-13
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Granted: 1954-09-21
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Expires: 1968-07-13
Abstract
No abstract record available.
Inventors
- 👤 George W Wacker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:48
CPC Classifications
B; B29; B29B; B29B13/00; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/462; B29C45/463; Y; Y10; Y10S; Y10S264/00; Y10S264/65; Y10S425/00; Y10S425/038
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |