US2375357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making plastic springs
Assignee: Individual
•
Filing: 1943-03-31
•
Granted: 1945-05-08
•
Expires: 1963-03-31
Abstract
No abstract record available.
Inventors
- 👤 Friedman Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:07
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/131; B29C48/06; Y; Y10; Y10S; Y10S264/00; Y10S264/40; Y10S264/64; Y10S292/00; Y10S292/38
Claims Analysis
Total Claims: 0
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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) | 1948-05-07 | 1948-11-06 | 1949-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-05-07 | 1952-11-06 | 1953-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-05-07 | 1956-11-06 | 1957-05-08 | $7700.00 | Window Closed / Lapsed |