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US2429631A
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Multichannel pulse modulator system
Assignee: STC PLC
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Filing: 1945-04-30
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Granted: 1947-10-28
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Expires: 1965-04-30
Abstract
No abstract record available.
Inventors
- 👤 Labin Emile
- 👤 Donald D Grieg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:22
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/04; H04J3/045; H01; H01J; H01J31/00; H01J31/02; H01J31/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2172354A
Cited
US2328944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-27 | 1951-04-28 | 1951-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-27 | 1955-04-28 | 1955-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-27 | 1959-04-28 | 1959-10-28 | $7700.00 | Window Closed / Lapsed |