US2690474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time and date transmitter
Assignee: Western Union Telegraph Co
•
Filing: 1949-05-19
•
Granted: 1954-09-28
•
Expires: 1969-05-19
Abstract
No abstract record available.
Inventors
- 👤 Jr William Stanley Weste Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:48
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/02; H04L12/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1673369A
Cited
US2200807A
Cited
US2289746A
Cited
US2357297A
Cited
US2467566A
Cited
US2345173A
Cited
US2389694A
Cited
US2502654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-27 | 1958-03-29 | 1958-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-27 | 1962-03-29 | 1962-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-27 | 1966-03-29 | 1966-09-28 | $7700.00 | Window Closed / Lapsed |