US2704822A
Expired / Lapsed
US
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Standardization of null-type measuring systems
Assignee: Leeds and Northrup Co
•
Filing: 1954-02-05
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Granted: 1955-03-22
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Expires: 1974-02-05
Abstract
No abstract record available.
Inventors
- 👤 Charles E Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:16
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/02; G01K7/14; G01R; G01R19/00; G01R19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-21 | 1958-09-20 | 1959-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-21 | 1962-09-20 | 1963-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-21 | 1966-09-20 | 1967-03-22 | $7700.00 | Window Closed / Lapsed |