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US2564928A
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Amplitude modulated telemetering system
Assignee: Wurlitzer Co
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Filing: 1947-01-24
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Granted: 1951-08-21
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Expires: 1967-01-24
Abstract
No abstract record available.
Inventors
- 👤 Francis M Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:39
CPC Classifications
G; G08; G08C; G08C15/00; G08C15/02; G08C15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2007416A
Cited
US2212568A
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US2288817A
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US2325366A
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US2402598A
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US2444950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |