US2416082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humless electrodynamic pickup
Assignee: SoundScriber Corp
•
Filing: 1944-08-08
•
Granted: 1947-02-18
•
Expires: 1964-08-08
Abstract
No abstract record available.
Inventors
- 👤 Donald F Balmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:47
CPC Classifications
H; H04; H04R; H04R9/00; H04R9/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB396875A
Cited
GB416574A
Cited
US2105167A
Cited
US2148796A
Cited
US2290057A
Cited
US2213936A
Cited
US2275309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-17 | 1950-08-19 | 1951-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-17 | 1954-08-19 | 1955-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-17 | 1958-08-19 | 1959-02-18 | $7700.00 | Window Closed / Lapsed |