Patent US3524772A successfully refreshed from Google Patents.
US3524772A
Expired / Lapsed
US
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Generator of electrical energy
Assignee: Intermedics Inc
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Filing: 1964-12-03
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Granted: 1970-08-18
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Expires: 1984-12-03
Abstract
No abstract record available.
Inventors
- 👤 David L Purdy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:39
CPC Classifications
F; F28; F28D; F28D15/00; F28D15/02; G; G21; G21D; G21D7/00; G21D7/04; G21H; G21H1/00; G21H1/10; G21H1/103; H; H10; H10N; H10N10/00; H10N10/10; H10N10/13; H10N10/17; H10N10/80; H10N10/81; H10N10/813; H10N10/817; Y; Y02; Y02E; Y02E30/00
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) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |