US2977632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centripetal extruder
Assignee: AT&T Inc
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Filing: 1959-04-10
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Granted: 1961-04-04
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Expires: 1979-04-10
Abstract
No abstract record available.
Inventors
- 👤 Tillman T Bunch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:33
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/304; B29C48/03; B29C48/06; B29C48/32; B29C48/34; B29C48/36; B29C48/47; B29C48/05; B29C48/09; B29K; B29K2105/00; B29K2105/06; B29K2105/20; B29L; B29L2031/00; B29L2031/34; B29L2031/3462
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR1177383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |