Patent US2736819A successfully refreshed from Google Patents.
US2736819A
Expired / Lapsed
US
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Electric generating unit
Assignee: Napier Turbochargers Ltd
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Filing: 1955-03-09
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Granted: 1956-02-28
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Expires: 1975-03-09
Abstract
No abstract record available.
Inventors
- 👤 Murray George Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:24
CPC Classifications
H; H02; H02K; H02K27/00; F; F02; F02B; F02B67/00; F02B67/04; H02K7/00; H02K7/003; H02K7/18; H02K7/1807; H02K7/1815; F02B63/00; F02B63/04
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) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |