Patent US3427546A successfully refreshed from Google Patents.
US3427546A
Expired / Lapsed
US
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End of travel indicator variable resistance device
Assignee: Beckman Coulter Inc
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Filing: 1967-11-01
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Granted: 1969-02-11
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Expires: 1987-11-01
Abstract
No abstract record available.
Inventors
- 👤 Leslie T Peart
- 👤 Charles W Yungblut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:23
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/38; H01C10/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA637737A
Cited
US3124779A
Cited
US2665490A
Cited
US2954539A
Cited
US2945199A
Cited
US3107336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |