US2422755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety drill
Assignee: Individual
•
Filing: 1944-04-27
•
Granted: 1947-06-24
•
Expires: 1964-04-27
Abstract
No abstract record available.
Inventors
- 👤 Strother John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:06
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/02; H01H3/20; B; B23; B23B; B23B45/00; B23B45/001; Y; Y10; Y10S; Y10S408/00; Y10S408/71
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US898386A
Cited
US926027A
Cited
US955237A
Cited
US1419398A
Cited
US1563250A
Cited
US1659284A
Cited
US2080202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-23 | 1950-12-23 | 1951-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-23 | 1954-12-23 | 1955-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-23 | 1958-12-23 | 1959-06-24 | $7700.00 | Window Closed / Lapsed |