US2439909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety razor blade
Assignee: GEORGE E HALE
•
Filing: 1945-12-12
•
Granted: 1948-04-20
•
Expires: 1965-12-12
Abstract
No abstract record available.
Inventors
- 👤 Ruskin Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:07
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/54; B26B21/56; B26B21/08; B26B21/14; B26B21/28
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) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |