US2587884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound insulation board
Assignee: Individual
•
Filing: 1947-02-05
•
Granted: 1952-03-04
•
Expires: 1967-02-05
Abstract
No abstract record available.
Inventors
- 👤 Palmer Per Anders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:03
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/262; E04; E04B; E04B9/00; E04B9/001; E04B9/22; F; F24; F24D; F24D3/00; F24D3/12; F24D3/16; F24D3/165; F24F; F24F7/00; F24F7/04; F24F7/06; F24F7/10; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B2001/8263; E04B1/84; E04B2001/8423; E04B2001/8433; E04B2001/8442; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2271929A
Cited
US2180945A
Cited
US2172944A
Cited
US2160794A
Cited
US2276788A
Cited
US2329102A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |