US3418455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Matched mailing detection system
Assignee: AT&T Inc
•
Filing: 1964-03-05
•
Granted: 1968-12-24
•
Expires: 1984-03-05
Abstract
No abstract record available.
Inventors
- 👤 Leroy J Rackliffe
- 👤 Rodney G Rau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:26
CPC Classifications
B; B43; B43M; B43M3/00; B43M3/04; B07; B07C; B07C1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2661841A
Cited
US2660372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |