Patent US2043345A successfully refreshed from Google Patents.
US2043345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wave transmission network
Assignee: AT&T Inc
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Filing: 1934-03-06
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Granted: 1936-06-09
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Expires: 1954-03-06
Abstract
No abstract record available.
Inventors
- 👤 Bobis Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:30
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/075; H03H7/06; H03H7/07; H03H7/17; H03H7/1716; H03H7/1725; H03H7/1741; H03H7/175; H03H7/1758; H03H7/1766; H03H7/1775; H03H7/1783; H03H7/1791
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) | 1939-06-09 | 1939-12-09 | 1940-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-06-09 | 1943-12-09 | 1944-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-06-09 | 1947-12-09 | 1948-06-09 | $7700.00 | Window Closed / Lapsed |