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US2980891A
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Electromagnetic impulse counter
Assignee: International Standard Electric Corp
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Filing: 1955-09-14
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Granted: 1961-04-18
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Expires: 1975-09-14
Abstract
No abstract record available.
Inventors
- 👤 Steinbach Heinz
- 👤 Scheidig Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:28
CPC Classifications
G; G06; G06M; G06M1/00; G06M1/08; G06M1/10; G06M1/102; G06M1/104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2069169A
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US2077091A
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US2385858A
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US2441001A
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US2452568A
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US2622143A
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US2610242A
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US2538819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |