US2741572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforcing and supporting means of plastic material for articles consisting of the same material
Assignee: Individual
•
Filing: 1953-10-08
•
Granted: 1956-04-10
•
Expires: 1973-10-08
Abstract
No abstract record available.
Inventors
- 👤 Lennartz Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:58
CPC Classifications
G; G03; G03C; G03C8/00; B; B29; B29C; B29C63/00; B29C63/0026; B29C63/0034; B29C65/00; B29C65/02; B31; B31F; B31F5/00; B31F5/06; B31F5/08; B31F5/085; B42; B42F; B42F7/00; B42F7/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24198; Y10T428/24777
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1818404A
Cited
US1841199A
Cited
US2146308A
Cited
US2388297A
Cited
GB560251A
Cited
US2606352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |