US3507940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped charge blending method and product
Assignee: Armstrong World Industries Inc
•
Filing: 1967-03-14
•
Granted: 1970-04-21
•
Expires: 1987-03-14
Abstract
No abstract record available.
Inventors
- 👤 George E Gard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:45
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/02; H01Q15/08; Y; Y10; Y10S; Y10S425/00; Y10S425/808
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US964291A
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US1599084A
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US2884231A
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US2943358A
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US2970905A
Cited
US3088713A
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US3256373A
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US3240849A
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US3155377A
Cited
US3298671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |