US2866513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for generating sound
Assignee: EDWARD V BRACKEN
•
Filing: 1952-11-24
•
Granted: 1958-12-30
•
Expires: 1972-11-24
Abstract
No abstract record available.
Inventors
- 👤 Stanley F White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:42
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/28; H04R1/2807; H04R1/2861; H04R1/2865
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB337264A
Cited
US1869178A
Cited
US2224919A
Cited
US2205804A
Cited
US2310243A
Cited
FR908709A
Cited
US2568883A
Cited
US2534040A
Cited
US2604182A
Cited
US2643728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |