US2364190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring system and circuit
Assignee: AT&T Inc
•
Filing: 1941-10-29
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Granted: 1944-12-05
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Expires: 1961-10-29
Abstract
No abstract record available.
Inventors
- 👤 Montague S Burgess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:32
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/46; H04B3/462
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-12-05 | 1948-06-05 | 1948-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-12-05 | 1952-06-05 | 1952-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-12-05 | 1956-06-05 | 1956-12-05 | $7700.00 | Window Closed / Lapsed |