Patent US1593164A successfully refreshed from Google Patents.
US1593164A
Expired / Lapsed
US
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Apparatus for the electric transmission of signs
Assignee: Siemens and Halske AG
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Filing: 1924-08-05
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Granted: 1926-07-20
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Expires: 1944-08-05
Abstract
No abstract record available.
Inventors
- 👤 Ehrhardt Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:37
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/38; H04L25/40; H04L25/49; H04L25/4902
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) | 1929-07-19 | 1930-01-18 | 1930-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-07-19 | 1934-01-18 | 1934-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-07-19 | 1938-01-18 | 1938-07-20 | $7700.00 | Window Closed / Lapsed |