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US3410039A
Expired / Lapsed
US
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Roof from assembled shell supported by cable net
Assignee: Czech Academy of Sciences
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Filing: 1966-02-24
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Granted: 1968-11-12
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Expires: 1986-02-24
Abstract
No abstract record available.
Inventors
- 👤 Brezina Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:50
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1825800A
Cited
US2592465A
Cited
FR1196729A
Cited
US3137097A
Cited
GB981672A
Cited
FR1352239A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |