Patent US2935152A successfully refreshed from Google Patents.
US2935152A
Expired / Lapsed
US
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Acoustical units and installed assemblies thereof
Assignee: Individual
•
Filing: 1956-05-15
•
Granted: 1960-05-03
•
Expires: 1976-05-15
Abstract
No abstract record available.
Inventors
- 👤 Maccaferri Mario
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:30
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/04; E04B9/0435; E04B9/001; E04B9/0464; E04B9/0478; E04B9/0485
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |