Patent US2610242A successfully refreshed from Google Patents.
US2610242A
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Impulse counting relay and system therefor
Assignee: AT&T Inc
•
Filing: 1948-03-20
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Granted: 1952-09-09
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Expires: 1968-03-20
Abstract
No abstract record available.
Inventors
- 👤 Thomas P Farkas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:52
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2089334A
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US808834A
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US2305450A
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US2441001A
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US2452051A
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US2414476A
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US2456169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |