US3523989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing structural wall or ceiling elements comprising rigid foamed material and fillers
Assignee: Individual
•
Filing: 1967-10-03
•
Granted: 1970-08-11
•
Expires: 1987-10-03
Abstract
No abstract record available.
Inventors
- 👤 Albin Murer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:54
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; B; B29; B29C; B29C33/00; B29C33/12; B29C33/123; B29C44/00; B29C44/02; B29C44/12; B29C44/1228; B29C44/1233; B29C44/34; B29C44/36; B29C44/38; B29C44/44; B29C44/445; B29C70/00; B29C70/68; B29C70/72; E; E04; E04B; E04B1/00; E04B1/02; E04B1/04; E04B1/06; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/24; E04C2/243; E04C2/26; E04C2/284; E04C2/288; E04C2/30; E04C2/38; E04C2/386; C08J2375/00; C08J2375/04; C08J2425/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |