US2497411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse transmission system
Assignee: Stromberg Carlson Corp
•
Filing: 1946-07-25
•
Granted: 1950-02-14
•
Expires: 1966-07-25
Abstract
No abstract record available.
Inventors
- 👤 James A Krumhansl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:18
CPC Classifications
H; H04; H04B; H04B14/00; H04B14/02; H04B14/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2048081A
Cited
US2227596A
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US2199634A
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US2403210A
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US2398097A
Cited
US2395467A
Cited
US2432204A
Cited
US2408077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |