Patent US3405869A successfully refreshed from Google Patents.
US3405869A
Expired / Lapsed
US
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Range control system
Assignee: TDK Micronas GmbH
•
Filing: 1967-03-30
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Granted: 1968-10-15
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Expires: 1987-03-30
Abstract
No abstract record available.
Inventors
- 👤 Richard D Grayson
- 👤 Newton Le Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:02
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; F; F24; F24C; F24C3/00; F24C3/12; F24C3/126; F24C3/128; G05D23/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3115926A
Cited
US3312396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |