Patent US2686335A successfully refreshed from Google Patents.
US2686335A
Expired / Lapsed
US
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Plastic extrusion
Assignee: Individual
•
Filing: 1951-03-20
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Granted: 1954-08-17
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Expires: 1971-03-20
Abstract
No abstract record available.
Inventors
- 👤 Frank R Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:56
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/52; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/12; B29C48/16; B29C48/18; B29C48/21; B29C48/25; B29C48/30; B29C48/305; B29C48/36; B29C48/395; B29C48/455; B29C48/19; B29C48/20; B29L; B29L2030/00; B29L2030/002
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) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |