Patent US2603876A successfully refreshed from Google Patents.
US2603876A
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Amplifying comparator with differential screw
Assignee: GERTRUDE WEDIN
•
Filing: 1950-04-27
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Granted: 1952-07-22
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Expires: 1970-04-27
Abstract
No abstract record available.
Inventors
- 👤 Ivar T Wedin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:46
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/02; G01B5/06; G01B5/061; G01B3/00; G01B3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190608798A
Cited
US902492A
Cited
GB179910A
Cited
US1900231A
Cited
US2083759A
Cited
US2252146A
Cited
GB552589A
Cited
US2481078A
Cited
CH247257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |