Patent US2755998A successfully refreshed from Google Patents.
US2755998A
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US
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Device for indicating rhythmic cycle
Assignee: Individual
•
Filing: 1954-12-22
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Granted: 1956-07-24
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Expires: 1974-12-22
Abstract
No abstract record available.
Inventors
- 👤 Francis J Pisarra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:46
CPC Classifications
G; G06; G06G; G06G1/00; G06C; G06C3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1983062A
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US2161345A
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US778790A
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US798206A
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US1609972A
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FR604580A
Cited
US2389369A
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US2494291A
Cited
US2520208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |