Patent US2344600A successfully refreshed from Google Patents.
US2344600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wallboard
Assignee: Certainteed LLC
•
Filing: 1941-03-06
•
Granted: 1944-03-21
•
Expires: 1961-03-06
Abstract
No abstract record available.
Inventors
- 👤 Philip W Codwise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:47
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; B; B28; B28B; B28B19/00; B28B19/0092; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31844; Y10T428/31848; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982; Y10T428/31993; Y10T428/31996
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) | 1947-03-21 | 1947-09-20 | 1948-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-03-21 | 1951-09-20 | 1952-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-03-21 | 1955-09-20 | 1956-03-21 | $7700.00 | Window Closed / Lapsed |