US2832834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signalling arrangement for telecommunication systems
Assignee: Government of Netherlands
•
Filing: 1952-06-04
•
Granted: 1958-04-29
•
Expires: 1972-06-04
Abstract
No abstract record available.
Inventors
- 👤 Roelof M M Oberman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:56
CPC Classifications
H; H04; H04Q; H04Q1/00; H04Q1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1577033A
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US1956371A
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US1974159A
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US2087405A
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US2341746A
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US2444065A
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US2354668A
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US2354667A
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US2354682A
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US2368056A
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US2432098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |