Patent US2637619A successfully refreshed from Google Patents.
US2637619A
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Multirange recorder indicator
Assignee: Leeds and Northrup Co
•
Filing: 1949-02-23
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Granted: 1953-05-05
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Expires: 1969-02-23
Abstract
No abstract record available.
Inventors
- 👤 Irving M Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:05
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1768966A
Cited
GB266798A
Cited
US2113069A
Cited
US2401019A
Cited
US2392916A
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US2476025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |