Patent US3424831A successfully refreshed from Google Patents.
US3424831A
Expired / Lapsed
US
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Methods for injection molding
Assignee: Spatz Labs
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Filing: 1966-07-11
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Granted: 1969-01-28
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Expires: 1986-07-11
Abstract
No abstract record available.
Inventors
- 👤 Walter B Spatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:00
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/40; B29C45/44; B29C45/4407; Y; Y10; Y10S; Y10S425/00; Y10S425/223
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) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |