US2500873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guide for grooving phonograph record disks
Assignee: Individual
•
Filing: 1946-06-13
•
Granted: 1950-03-14
•
Expires: 1966-06-13
Abstract
No abstract record available.
Inventors
- 👤 Victor F Sager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:18
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/02; G11B3/10; G11B3/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE268272C
Cited
US323272A
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US864396A
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GB191208318A
Cited
US1342872A
Cited
US1369470A
Cited
US1723517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |