Patent US2568249A successfully refreshed from Google Patents.
US2568249A
Expired / Lapsed
US
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Latch operated clutch
Assignee: AT&T Teletype Corp
•
Filing: 1946-11-01
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Granted: 1951-09-18
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Expires: 1966-11-01
Abstract
No abstract record available.
Inventors
- 👤 Arthur N Nilson
- 👤 Rolf A Thienemann
- 👤 Walter J Zenner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:03
CPC Classifications
H; H04; H04L; H04L13/00; H04L13/02; H04L13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US354242A
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US453810A
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US865154A
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US1422062A
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US1800072A
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US2045572A
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US2249281A
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US2273496A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |