US2646852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loud-speaker cabinet
Assignee: Individual
•
Filing: 1949-05-10
•
Granted: 1953-07-28
•
Expires: 1969-05-10
Abstract
No abstract record available.
Inventors
- 👤 Forrester John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:44
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/28; H04R1/2807; H04R1/2853; H04R1/2857
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB246634A
Cited
US1810708A
Cited
GB337264A
Cited
US1985831A
Cited
US2214591A
Cited
US2224919A
Cited
US2205804A
Cited
GB656732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |