US2451131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making reinforced structures
Assignee: VIDAL Corp
•
Filing: 1943-11-11
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Granted: 1948-10-12
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Expires: 1963-11-11
Abstract
No abstract record available.
Inventors
- 👤 Eugene L Vidal
- 👤 Laurence J Marhoefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:07
CPC Classifications
B; B32; B32B; B32B37/00; B21; B21D; B21D26/00; B21D26/02; B21D26/033; B21D26/051; B21D39/00; B21D39/08; B21D39/20; B21D39/203; B27; B27D; B27D1/00; B27D1/04; B27D1/08; B27D1/083; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/42; B29C70/44; B29C70/446; B29D; B29D24/00; B29D24/001; B29D99/00; B29D99/0025; B29D99/0028; B29C43/00; B29C43/02; B29C43/10; B29C43/12; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1044
Claims Analysis
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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) | 1951-10-12 | 1952-04-12 | 1952-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-12 | 1956-04-12 | 1956-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-12 | 1960-04-12 | 1960-10-12 | $7700.00 | Window Closed / Lapsed |