US3389397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analog centesimal recorder having redundant digit
Assignee: Leeds and Northrup Co
•
Filing: 1967-03-03
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Granted: 1968-06-18
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Expires: 1987-03-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Rowland G Lex
- 👤 George C Mergner
- 👤 Norman E Polster
- 👤 Jr Albert J Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:14
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/66; H03M1/68; G; G01; G01R; G01R13/00; G01R13/04; G01R17/00; G06; G06K; G06K15/00; G06K15/22; H03M1/74; H03M1/80; H03M1/808
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2673136A
Cited
US3214764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |