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US3042922A
Expired / Lapsed
US
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Multiple trace recorder with trace identifier
Assignee: Individual
•
Filing: 1960-08-22
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Granted: 1962-07-03
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Expires: 1980-08-22
Abstract
No abstract record available.
Inventors
- 👤 Robert P Ledbetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:25
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/24; G01D18/00; G01D9/00; G01D9/28
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) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |