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US2488934A
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US
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Apparatus for applying serving material to a core
Assignee: AT&T Inc
•
Filing: 1946-10-29
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Granted: 1949-11-22
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Expires: 1966-10-29
Abstract
No abstract record available.
Inventors
- 👤 Vincent A Rayburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:08
CPC Classifications
D; D07; D07B; D07B7/00; D07B7/02; D07B7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US986690A
Cited
US1881621A
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US1978086A
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US2074391A
Cited
US2129956A
Cited
GB468486A
Cited
US2390454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-21 | 1953-05-23 | 1953-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-21 | 1957-05-23 | 1957-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-21 | 1961-05-23 | 1961-11-22 | $7700.00 | Window Closed / Lapsed |