US3537003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency-measuring apparatus for the indication of momentary values of the frequency of a series of impulses,especially for medical purposes
Assignee: F Hoffmann La Roche AG
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Filing: 1968-04-22
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Granted: 1970-10-27
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Expires: 1988-04-22
Abstract
No abstract record available.
Inventors
- 👤 Conradin V Planta
- 👤 Guido Stebler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:41
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/3005; H03G3/301; A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/024; A61B5/24; A61B5/30; A61B5/307; A61B5/308; G; G01; G01R; G01R23/00; H03G1/00; H03G1/0005; H03G1/0035; H03G1/0047
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) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |