US2980325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for indicating rhythmic cycle
Assignee: Individual
•
Filing: 1956-06-18
•
Granted: 1961-04-18
•
Expires: 1976-06-18
Abstract
No abstract record available.
Inventors
- 👤 Francis J Pisarra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:56
CPC Classifications
G; G06; G06G; G06G1/00; A; A61; A61B; A61B10/00; A61B10/0012; G06C; G06C3/00
Claims Analysis
Total Claims: 0
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US2755998A
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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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |