Patent US3375552A successfully refreshed from Google Patents.
US3375552A
Expired / Lapsed
US
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Apparatus for forming plastic units
Assignee: Dart Industries Inc
•
Filing: 1965-12-06
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Granted: 1968-04-02
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Expires: 1985-12-06
Abstract
No abstract record available.
Inventors
- 👤 Harold R Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:24
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/16; B29C48/00; B29C48/03; B29C48/09; B29C48/25; B29C48/30; B29C48/32; B29C48/36; B29C48/475
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2923975A
Cited
US2778533A
Cited
US2994107A
Cited
US2777164A
Cited
US3109198A
Cited
US3115682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |