Patent US2561020A successfully refreshed from Google Patents.
US2561020A
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US
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Instrument for measuring, interpolating, and the like
Assignee: Gerber Systems Corp
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Filing: 1946-05-20
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Granted: 1951-07-17
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Expires: 1966-05-20
Abstract
No abstract record available.
Inventors
- 👤 Gerber Heinz Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:29
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/02; G01B3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US300804A
Cited
US1717596A
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DE598911C
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FR838260A
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GB526005A
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US2307323A
Cited
US2331298A
Cited
US2526921A
Cited
US2422745A
Cited
US2530955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |