US3424220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isotensoid structures and method
Assignee: ASTRO RESEARCH CORP
•
Filing: 1965-10-21
•
Granted: 1969-01-28
•
Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Hans U Schuerch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:11
CPC Classifications
B; B21; B21F; B21F27/00; B21F27/005; B60; B60C; B60C9/00; B60C9/18; B60C9/1807; D; D04; D04B; D04B1/00; D04B1/10; D04B1/12; D04B1/123; D04B1/22; D10; D10B; D10B2403/00; D10B2403/02; D10B2403/024; D10B2403/0241; D10B2403/02411; D10B2403/03; D10B2403/033; D10B2505/00; D10B2505/02; D10B2505/022; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US500658A
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US591456A
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US2090554A
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US649720A
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US797138A
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US2458801A
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US2653463A
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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) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |