US2575445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scanning of sound records
Assignee: ANTHONY E NEIDT
•
Filing: 1949-09-21
•
Granted: 1951-11-20
•
Expires: 1969-09-21
Abstract
No abstract record available.
Inventors
- 👤 Germer Walter Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:14
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/002; G11B7/003; G11B7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1836124A
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US2307212A
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US2465849A
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US2415059A
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US2462263A
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US2490812A
Cited
US2486334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |