US2842233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutting blade lock
Assignee: Individual
•
Filing: 1956-12-19
•
Granted: 1958-07-08
•
Expires: 1976-12-19
Abstract
No abstract record available.
Inventors
- 👤 Walter J Greenleaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:25
CPC Classifications
B; B23; B23C; B23C5/00; B23C5/16; B23C5/20; B23C5/22; B23C5/2265; B23C5/2269; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7051; Y10T403/7052; Y10T403/7056; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1934; Y10T407/1938; Y10T407/22; Y10T407/2272; Y10T407/2282; Y10T407/2284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2304311A
Cited
US2547789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |