US2616974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Register control of coin return
Assignee: AT&T Inc
•
Filing: 1948-10-29
•
Granted: 1952-11-04
•
Expires: 1968-10-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Dehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:53
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2093117A
Cited
US2106360A
Cited
US2170403A
Cited
US2367769A
Cited
US2344634A
Cited
US2427000A
Cited
US2370239A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |