US3383207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making cellular material
Assignee: General Electric Co
•
Filing: 1967-05-02
•
Granted: 1968-05-14
•
Expires: 1987-05-02
Abstract
No abstract record available.
Inventors
- 👤 William R Butts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:45
CPC Classifications
B; B21; B21D; B21D47/00; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F3/1103; B22F3/1112; B22F2998/00; B22F2998/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |