US2451483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making protective helmets
Assignee: SPORT PRODUCTS Inc
•
Filing: 1946-06-14
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Granted: 1948-10-19
•
Expires: 1966-06-14
Abstract
No abstract record available.
Inventors
- 👤 Goldsmith Hugo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:25
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/42; B29C70/44; A; A42; A42B; A42B3/00; A42B3/04; A42B3/06; B29C33/00; B29C33/02; B29C70/30; B29C70/34; B29C70/342; B29C43/00; B29C43/02; B29C43/10; B29C43/12; B29L; B29L2031/00; B29L2031/48; B29L2031/4807; B29L2031/4814; B29L2031/4821; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1026; Y10T156/1043; Y10T156/1044; Y10T156/1048; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T156/108
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2312333A
Cited
US2351235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |