US2676286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage comparison device
Assignee: Hartford National Bank and Trust Co
•
Filing: 1949-07-29
•
Granted: 1954-04-20
•
Expires: 1969-07-29
Abstract
No abstract record available.
Inventors
- 👤 Buchner Robert Bertold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:34
CPC Classifications
H; H04; H04Q; H04Q1/00; H04Q1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22861E
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US2380950A
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US2441568A
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US2482544A
Cited
US2454781A
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US2439490A
Cited
US2482943A
Cited
US2529666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |