US2662155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic relay control
Assignee: James C Heintz & Co Inc
•
Filing: 1951-04-20
•
Granted: 1953-12-08
•
Expires: 1971-04-20
Abstract
No abstract record available.
Inventors
- 👤 Holmes Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:42
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/27535; G05D23/27541
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1219515A
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US1395065A
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US1751374A
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US1973123A
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US2073701A
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US2090531A
Cited
US2057535A
Cited
US2143501A
Cited
US2256117A
Cited
US2510041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |