US2687482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric generator
Assignee: United States Department of the Navy
•
Filing: 1945-06-04
•
Granted: 1954-08-24
•
Expires: 1965-06-04
Abstract
No abstract record available.
Inventors
- 👤 Ralph N Harmon
- 👤 Edward J Naumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:38
CPC Classifications
F; F42; F42C; F42C11/00; F42C11/04; F42C13/00; F42C13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE304254C
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DE280947C
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GB191201069A
Cited
US1338568A
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US2000516A
Cited
US1966897A
Cited
US2080371A
Cited
US1976880A
Cited
US1977185A
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GB451447A
Cited
US2403567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |