Patent US2709331A successfully refreshed from Google Patents.
US2709331A
Expired / Lapsed
US
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Single hand electric alarm clock
Assignee: Individual
•
Filing: 1950-12-22
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Granted: 1955-05-31
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Expires: 1970-12-22
Abstract
No abstract record available.
Inventors
- 👤 Lehner Victor Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:30
CPC Classifications
G; G04; G04C; G04C21/00; G04C21/16; G04C21/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1383560A
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US1513526A
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US1521600A
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US1572097A
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US2143692A
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US2163419A
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US2202581A
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US2282209A
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US2293459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |