Patent US2249435A successfully refreshed from Google Patents.
US2249435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor control and phasing
Assignee: AT&T Teletype Corp
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Filing: 1939-03-17
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Granted: 1941-07-15
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Expires: 1959-03-17
Abstract
No abstract record available.
Inventors
- 👤 Louis M Potts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:15
CPC Classifications
H; H04; H04L; H04L7/00; H04L7/0095
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) | 1944-07-14 | 1945-01-13 | 1945-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-07-14 | 1949-01-13 | 1949-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-07-14 | 1953-01-13 | 1953-07-15 | $7700.00 | Window Closed / Lapsed |