US2456346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound shield for telephone transmitters
Assignee: Individual
•
Filing: 1945-01-24
•
Granted: 1948-12-14
•
Expires: 1965-01-24
Abstract
No abstract record available.
Inventors
- 👤 Paul S Veneklasen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:55
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1368261A
Cited
US1440752A
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US1743290A
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US1757463A
Cited
US1930906A
Cited
US2398076A
Cited
US2390488A
Cited
US2408474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-14 | 1952-06-14 | 1952-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-14 | 1956-06-14 | 1956-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-14 | 1960-06-14 | 1960-12-14 | $7700.00 | Window Closed / Lapsed |