Patent US2663855A successfully refreshed from Google Patents.
US2663855A
Expired / Lapsed
US
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Calibrating measuring system
Assignee: Leeds and Northrup Co
•
Filing: 1949-07-01
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Granted: 1953-12-22
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Expires: 1969-07-01
Abstract
No abstract record available.
Inventors
- 👤 Jr George E Beggs
- 👤 Alfred W Kozak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:24
CPC Classifications
G; G08; G08C; G08C25/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US683831A
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US2076499A
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US2404891A
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US2424146A
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US2418836A
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US2368912A
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US2529729A
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US2451953A
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US2446153A
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US2577735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |