Patent US2842323A successfully refreshed from Google Patents.
US2842323A
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Assignee: AT&T Inc
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Filing: 1953-09-03
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Granted: 1958-07-08
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Expires: 1973-09-03
Abstract
No abstract record available.
Inventors
- 👤 Vincent A Rayburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:36
CPC Classifications
B; B65; B65H; B65H57/00; B65H57/18; B21; B21C; B21C47/00; B21C47/16; B21C47/18; B21C47/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US817883A
Cited
US1966532A
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US2298345A
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US2328541A
Cited
US2349873A
Cited
US2390157A
Cited
US2390158A
Cited
GB615340A
Cited
US2514264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |