US3541307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selection circuit
Assignee: Individual
•
Filing: 1965-10-23
•
Granted: 1970-11-17
•
Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Dirks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:33
CPC Classifications
B; B41; B41B; B41B27/00; B41B27/02; B41B27/10; B41B27/28; G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/08; G05B19/12; G05B19/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |