US3427972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically ignited primer element
Assignee: Dynamit Nobel AG
•
Filing: 1966-06-06
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Granted: 1969-02-18
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Expires: 1986-06-06
Abstract
No abstract record available.
Inventors
- 👤 Hans Stadler
- 👤 Heinz Gawlick
- 👤 Hans Umbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:05
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/14; F42B3/11; F42C; F42C19/00; F42C19/08; F42C19/12; F42C19/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US112859A
Cited
US128945A
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US319628A
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US323974A
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US426971A
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US815490A
Cited
DE1029266B
Cited
US3059576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |