US2475281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delay electric initiator
Assignee: Hercules Powder Co
•
Filing: 1945-01-19
•
Granted: 1949-07-05
•
Expires: 1965-01-19
Abstract
No abstract record available.
Inventors
- 👤 Edward J Hanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:35
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/16; F42B3/12; F42B3/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US838216A
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US938553A
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US2007959A
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US1964826A
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US1989729A
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US2123691A
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US2228339A
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US2370159A
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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) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |