Patent US1999796A successfully refreshed from Google Patents.
US1999796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacture of thermoplastic sheet constructions
Assignee: Woodall Industries Inc
•
Filing: 1930-09-23
•
Granted: 1935-04-30
•
Expires: 1950-09-23
Abstract
No abstract record available.
Inventors
- 👤 Paul R Zinser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:54
CPC Classifications
B; B29; B29C; B29C43/00; Y; Y10; Y10S; Y10S220/00; Y10S220/25
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) | 1938-04-29 | 1938-10-29 | 1939-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-04-29 | 1942-10-29 | 1943-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-04-29 | 1946-10-29 | 1947-04-30 | $7700.00 | Window Closed / Lapsed |