US1845133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Edge-sealed assembly
Assignee: DuPont Viscoloid Co
•
Filing: 1928-06-16
•
Granted: 1932-02-16
•
Expires: 1948-06-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Francis B Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:37
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/08; B32B17/10; B32B17/10005; B32B17/10165; B32B17/10293; B32B17/10302; Y; Y10; Y10S; Y10S76/00; Y10S76/03; Y10T; Y10T428/00; Y10T428/24; Y10T428/24777; Y10T428/31; Y10T428/315; Y10T428/31504; Y10T428/31551; Y10T428/31634; Y10T428/31638
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) | 1935-02-15 | 1935-08-17 | 1936-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-02-15 | 1939-08-17 | 1940-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-02-15 | 1943-08-17 | 1944-02-16 | $7700.00 | Window Closed / Lapsed |