US2691484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coin collector
Assignee: AT&T Inc
•
Filing: 1948-08-25
•
Granted: 1954-10-12
•
Expires: 1968-08-25
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Hoyt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:49
CPC Classifications
H; H04; H04M; H04M17/00; H04M17/02; H04M17/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1998832A
Cited
US1916992A
Cited
GB406172A
Cited
US2075989A
Cited
US2076513A
Cited
US2278436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |