Patent US1947788A successfully refreshed from Google Patents.
US1947788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound absorbing panel
Assignee: INSULATION DEV CORP
•
Filing: 1932-01-18
•
Granted: 1934-02-20
•
Expires: 1952-01-18
Abstract
No abstract record available.
Inventors
- 👤 Brouwer D Mcintyre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:56
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; E04B2001/8423; E04B2001/8433; E04B2001/8442; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/237
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1937-02-19 | 1937-08-21 | 1938-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-02-19 | 1941-08-21 | 1942-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-02-19 | 1945-08-21 | 1946-02-20 | $7700.00 | Window Closed / Lapsed |