US3027520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching circuit
Assignee: Beckman Coulter Inc
•
Filing: 1958-11-03
•
Granted: 1962-03-27
•
Expires: 1978-11-03
Abstract
No abstract record available.
Inventors
- 👤 Hinrichs Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:26
CPC Classifications
H; H01; H01H; H01H47/00; H01H47/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2401779A
Cited
US2489008A
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US2706265A
Cited
US2919409A
Cited
US2757283A
Cited
US2864008A
Cited
US2843747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |