US2433347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telecommunication system
Assignee: International Standard Electric Corp
•
Filing: 1944-03-24
•
Granted: 1947-12-30
•
Expires: 1964-03-24
Abstract
No abstract record available.
Inventors
- 👤 Deakin Gerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:11
CPC Classifications
H; H04; H04Q; H04Q1/00; H04Q1/18; H04Q1/30; H04Q1/32; H04Q1/34; H04M; H04M1/00; H04M1/02; H04M1/23; H04M1/26; H04M1/515
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-29 | 1951-06-30 | 1951-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-29 | 1955-06-30 | 1955-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-29 | 1959-06-30 | 1959-12-30 | $7700.00 | Window Closed / Lapsed |