US2544710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical repeater system
Assignee: Individual
•
Filing: 1945-06-13
•
Granted: 1951-03-13
•
Expires: 1965-06-13
Abstract
No abstract record available.
Inventors
- 👤 Thomas O Mccarthy
- 👤 Wilbur W Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:54
CPC Classifications
G; G08; G08C; G08C19/00; G08C19/38; G08C19/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE344135C
Cited
FR880645A
Cited
US1612117A
Cited
US1684137A
Cited
US1895942A
Cited
US2172410A
Cited
US2164179A
Cited
US2308566A
Cited
US2460798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |