US2594535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple channel electronic switch
Assignee: United States Department of the Navy
•
Filing: 1944-04-26
•
Granted: 1952-04-29
•
Expires: 1964-04-26
Abstract
No abstract record available.
Inventors
- 👤 Bertram Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:37
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/04; H04J3/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2048081A
Cited
US2172354A
Cited
US2262838A
Cited
US2400822A
Cited
US2213941A
Cited
US2363062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |