US2391469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Communication and posting system
Assignee: Teleregister Corp
•
Filing: 1944-09-02
•
Granted: 1945-12-25
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Expires: 1964-09-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Marshall
- 👤 Harold F May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:06
CPC Classifications
G; G08; G08G; G08G5/00; G08G5/20; G08G5/26; G08G5/22; G08G5/50; G08G5/56; H; H04; H04L; H04L12/00; H04L12/02; H04L12/16; H04L12/18; H04L12/1804
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-12-24 | 1949-06-25 | 1949-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-24 | 1953-06-25 | 1953-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-24 | 1957-06-25 | 1957-12-25 | $7700.00 | Window Closed / Lapsed |