Patent US3147515A successfully refreshed from Google Patents.
US3147515A
Expired / Lapsed
US
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Apparatus for extruding tubing
Assignee: OI Glass Inc
•
Filing: 1961-04-07
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Granted: 1964-09-08
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Expires: 1981-04-07
Abstract
No abstract record available.
Inventors
- 👤 Donald L Amsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:02
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/03; B29C48/09; B29C48/325; B29C48/16; B29C48/18; B29C48/21; B29C48/335; Y; Y10; Y10S; Y10S264/00; Y10S264/33
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |