US2688659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit-arrangement for use in automatic signaling systems for numerical adjustment of a switch by a selective marking method
Assignee: Hartford National Bank and Trust Co
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Filing: 1950-10-21
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Granted: 1954-09-07
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Expires: 1970-10-21
Abstract
No abstract record available.
Inventors
- 👤 Robert Bertold Buchner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:41
CPC Classifications
H; H04; H04Q; H04Q1/00; H04Q1/18; B; B23; B23K; B23K9/00; B23K9/20; B23K9/207
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2444065A
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US2454809A
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FR895485A
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US2380950A
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US2354667A
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US2419540A
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US2542998A
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US2454781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |