Patent US2640170A successfully refreshed from Google Patents.
US2640170A
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Device for converting motion into electrical energy
Assignee: LOUIS BERNAT
•
Filing: 1946-08-16
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Granted: 1953-05-26
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Expires: 1966-08-16
Abstract
No abstract record available.
Inventors
- 👤 Albert E Shaw
- 👤 Robert J Moon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:04
CPC Classifications
H; H04; H04R; H04R23/00; H01; H01J; H01J21/00; H01J21/02; H01J21/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21361E
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USRE21458E
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US1554561A
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US1558120A
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US1720824A
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US1871253A
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US1831977A
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DE660398C
Cited
US2182736A
Cited
US2165307A
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US2473820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |