US1951983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated board
Assignee: WILLIAM PLATTS KELLETT JR
•
Filing: 1931-12-24
•
Granted: 1934-03-20
•
Expires: 1951-12-24
Abstract
No abstract record available.
Inventors
- 👤 Kellett William Platts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:30
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/234; Y10T428/239; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/31504; Y10T428/31678; Y10T428/31703
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) | 1937-03-19 | 1937-09-18 | 1938-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-03-19 | 1941-09-18 | 1942-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-03-19 | 1945-09-18 | 1946-03-20 | $7700.00 | Window Closed / Lapsed |