Patent US1440198A successfully refreshed from Google Patents.
Patent US2528015A successfully refreshed from Google Patents.
US2528015A
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Assignee: Weston Electric Instrument Corp
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Filing: 1946-06-18
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Granted: 1950-10-31
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Expires: 1966-06-18
Abstract
No abstract record available.
Inventors
- 👤 Vozcan L Parsegian
- 👤 Charles O Fairchild
- 👤 Nelson L Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:39
CPC Classifications
G; G01; G01D; G01D9/00; G01D9/02; G01D9/10; G01D9/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2361174A
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US1188329A
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US1470691A
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US1771272A
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US1564634A
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US1816826A
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US1927899A
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US2217881A
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US2074118A
Cited
US2131346A
Cited
US2282929A
Cited
US2421673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |