Patent US3394434A successfully refreshed from Google Patents.
US3394434A
Expired / Lapsed
US
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Injection moulding machine locking device
Assignee: SYDNEY CHARLES HART STILL
•
Filing: 1965-12-02
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Granted: 1968-07-30
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Expires: 1985-12-02
Abstract
No abstract record available.
Inventors
- 👤 Hart-Still Sydney Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:37
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/20; B29C33/202; B29C45/00; B29C45/17; B29C45/64; B29C45/641; Y; Y10; Y10S; Y10S425/00; Y10S425/223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB510393A
Cited
US2744290A
Cited
US2841826A
Cited
US2916768A
Cited
US3156014A
Cited
US3120039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |