Patent US2425177A successfully refreshed from Google Patents.
Patent US2425315A successfully refreshed from Google Patents.
US2425315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse communication system
Assignee: RCA Corp
•
Filing: 1944-02-17
•
Granted: 1947-08-12
•
Expires: 1964-02-17
Abstract
No abstract record available.
Inventors
- 👤 John B Atwood
- 👤 Harold O Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:47
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/155; H04B7/17
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1433599A
Cited
US1798066A
Cited
US2034738A
Cited
US2045244A
Cited
US2113214A
Cited
US2199179A
Cited
US2266401A
Cited
US2262838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-11 | 1951-02-10 | 1951-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-11 | 1955-02-10 | 1955-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-11 | 1959-02-10 | 1959-08-12 | $7700.00 | Window Closed / Lapsed |