US3473526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cardiac pulse-rate monitor
Assignee: LIFEGUARD WATCH
•
Filing: 1967-07-14
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Granted: 1969-10-21
•
Expires: 1987-07-14
Abstract
No abstract record available.
Inventors
- 👤 Albert Dale Herman
- 👤 Herbert Zeppo Marx
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:22
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/024; A61B5/0245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US576180A
Cited
US596293A
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US1881389A
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US2833274A
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US2828734A
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US2831479A
Cited
US3156235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |