US2218170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead wires for firing devices
Assignee: Hercules Powder Co
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Filing: 1938-12-16
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Granted: 1940-10-15
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Expires: 1958-12-16
Abstract
No abstract record available.
Inventors
- 👤 William C Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:48
CPC Classifications
F; F42; F42D; F42D1/00; F42D1/04; F42B; F42B3/00; F42B3/10; F42B3/11; F42B3/18; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24612; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2978; Y10T428/31504; Y10T428/31678
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) | 1943-10-15 | 1944-04-15 | 1944-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-15 | 1948-04-15 | 1948-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-15 | 1952-04-15 | 1952-10-15 | $7700.00 | Window Closed / Lapsed |