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US2694801A
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US
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Pulse counting and registration system
Assignee: AT&T Inc
•
Filing: 1951-12-18
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Granted: 1954-11-16
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Expires: 1971-12-18
Abstract
No abstract record available.
Inventors
- 👤 Albert E Bachelet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:02
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H03; H03K; H03K29/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1498544A
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US2301748A
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US2308778A
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US2352742A
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US2373134A
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US2561722A
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US2513260A
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US2589465A
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US2597428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |