US2478920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse system
Assignee: RCA Corp
•
Filing: 1943-08-04
•
Granted: 1949-08-16
•
Expires: 1963-08-04
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Hansell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:17
CPC Classifications
H; H04; H04J; H04J3/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1319068A
Cited
US1573303A
Cited
US1530660A
Cited
US1802745A
Cited
US1969328A
Cited
US2048081A
Cited
US2212558A
Cited
US2227108A
Cited
US2247213A
Cited
US2266401A
Cited
US2262838A
Cited
US2263165A
Cited
US2199634A
Cited
US2205359A
Cited
US2272070A
Cited
US2256336A
Cited
US2250528A
Cited
US2298657A
Cited
US2328944A
Cited
US2295585A
Cited
US2340429A
Cited
US2405069A
Cited
US2355606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-15 | 1953-02-14 | 1953-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-15 | 1957-02-14 | 1957-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-15 | 1961-02-14 | 1961-08-16 | $7700.00 | Window Closed / Lapsed |