US2654807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marker for allotting a link and a sender
Assignee: AT&T Inc
•
Filing: 1949-11-30
•
Granted: 1953-10-06
•
Expires: 1969-11-30
Abstract
No abstract record available.
Inventors
- 👤 Shepherd Judson O'd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:46
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/0004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1760851A
Cited
US1874684A
Cited
US2184844A
Cited
US2201986A
Cited
US2235803A
Cited
US2286142A
Cited
US2392089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |