Patent US2654837A successfully refreshed from Google Patents.
US2654837A
Expired / Lapsed
US
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Wheatstone bridge testing arrangement
Assignee: Individual
•
Filing: 1948-05-05
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Granted: 1953-10-06
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Expires: 1968-05-05
Abstract
No abstract record available.
Inventors
- 👤 Roelof M M Oberman
- 👤 Snijders Antonie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:17
CPC Classifications
H; H04; H04Q; H04Q1/00; H04Q1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1694237A
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US2189582A
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US2275368A
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US2305307A
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US2338732A
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US2354718A
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US2329073A
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US2477615A
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US2496551A
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US2424312A
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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) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |