US2391742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic rubber compositions
Assignee: General Electric Co
•
Filing: 1943-04-01
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Granted: 1945-12-25
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Expires: 1963-04-01
Abstract
No abstract record available.
Inventors
- 👤 Alvin V Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:42
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/32; C08K5/33; C08K3/00; C08K3/02; C08K3/06; C08K3/18; C08K3/20; C08K3/22; C08K5/36; C08K5/39
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) | 1948-12-24 | 1949-06-25 | 1949-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-24 | 1953-06-25 | 1953-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-24 | 1957-06-25 | 1957-12-25 | $7700.00 | Window Closed / Lapsed |