US2519103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making educational phonograph records
Assignee: Individual
•
Filing: 1947-06-16
•
Granted: 1950-08-15
•
Expires: 1967-06-16
Abstract
No abstract record available.
Inventors
- 👤 Morris H Block
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:49
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/68; G11B3/70; G09; G09B; G09B15/00; G11B3/72; G11B3/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1229142A
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US1765517A
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US1653458A
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US1645295A
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US1765735A
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US1937919A
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US1936886A
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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) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |