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US2645751A
Expired / Lapsed
US
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Visual analyzing device for the ignition systems of internal-combustion engines
Assignee: Hastings Manufacturing Co
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Filing: 1949-07-07
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Granted: 1953-07-14
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Expires: 1969-07-07
Abstract
No abstract record available.
Inventors
- 👤 Henry L Byerlay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:17
CPC Classifications
F; F02; F02P; F02P17/00; F02P17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2406382A
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US2355363A
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US2450164A
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US2428926A
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US2430154A
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US2489312A
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US2492018A
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US2449801A
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US2493600A
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US2553059A
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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) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |