US2390262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustical structure
Assignee: Individual
•
Filing: 1941-08-15
•
Granted: 1945-12-04
•
Expires: 1961-08-15
Abstract
No abstract record available.
Inventors
- 👤 Mazer Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:27
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/8209; E04B2001/742; E04B2001/747; E04B2001/8263; E04B2001/829; E04B1/84; E04B2001/8414; E04B2001/8423; E04B2001/8442; E04B2001/8447
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-12-03 | 1949-06-04 | 1949-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-03 | 1953-06-04 | 1953-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-03 | 1957-06-04 | 1957-12-04 | $7700.00 | Window Closed / Lapsed |