US2593714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making cellular structures
Assignee: Individual
•
Filing: 1943-06-30
•
Granted: 1952-04-22
•
Expires: 1963-06-30
Abstract
No abstract record available.
Inventors
- 👤 Roy H Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:33
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/44; B29C43/00; B29C43/02; B29C43/10; B29C43/12; Y; Y10; Y10S; Y10S273/00; Y10S273/07; Y10S52/00; Y10S52/07; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |