Patent US3535736A successfully refreshed from Google Patents.
US3535736A
Expired / Lapsed
US
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Extrusion die
Assignee: GLASS LAB CO
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Filing: 1967-07-07
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Granted: 1970-10-27
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Expires: 1987-07-07
Abstract
No abstract record available.
Inventors
- 👤 Victor Shanok
- 👤 Jesse P Shanok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:49
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/465; B29C48/03; B29C48/06; B29C48/30; B29C48/305; B29C48/35; B29C43/00; B29C43/22; B29C43/24
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) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |