US2578643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telemetering system
Assignee: Wurlitzer Co
•
Filing: 1947-02-28
•
Granted: 1951-12-11
•
Expires: 1967-02-28
Abstract
No abstract record available.
Inventors
- 👤 Lamar E Hayslett
- 👤 Francis M Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:24
CPC Classifications
G; G08; G08C; G08C19/00; G08C19/16; G08C19/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2369662A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |