US2387478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety means for power-operated tools
Assignee: Lockheed Martin Corp
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Filing: 1944-03-28
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Granted: 1945-10-23
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Expires: 1964-03-28
Abstract
No abstract record available.
Inventors
- 👤 Frank E Tiffany
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:27
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/38; B21J15/10; B21J15/105; F; F16; F16P; F16P3/00; F16P3/12; F16P3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-10-22 | 1949-04-23 | 1949-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-10-22 | 1953-04-23 | 1953-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-10-22 | 1957-04-23 | 1957-10-23 | $7700.00 | Window Closed / Lapsed |