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Patent US2896159A successfully refreshed from Google Patents.
US2896159A
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Method and apparatus for measuring electrical resistance
Assignee: WEBSTER INSTR Inc
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Filing: 1955-07-14
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Granted: 1959-07-21
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Expires: 1975-07-14
Abstract
No abstract record available.
Inventors
- 👤 Robert A Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:55
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; B23K11/25; B23K11/251
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1895643A
Cited
US2142619A
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US2215805A
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US2371636A
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US2351201A
Cited
US2401917A
Cited
US2713662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |