US2645499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph spindle aperture reducer
Assignee: Farnsworth Research Corp
•
Filing: 1949-03-22
•
Granted: 1953-07-14
•
Expires: 1969-03-22
Abstract
No abstract record available.
Inventors
- 👤 William H Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:07
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/022; G11B17/028; G11B17/0281
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US832403A
Cited
US1253374A
Cited
US1755743A
Cited
AT124508B
Cited
FR725759A
Cited
FR735808A
Cited
US2187296A
Cited
US2501465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |