Patent US2180374A successfully refreshed from Google Patents.
Patent US2880830A successfully refreshed from Google Patents.
US2880830A
Expired / Lapsed
US
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Sandwich panel and flanged insert nut assembly
Assignee: Individual
•
Filing: 1957-02-21
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Granted: 1959-04-07
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Expires: 1977-02-21
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Rohe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:13
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/38; E04B1/41; E04B1/4114; E04B1/4121; F; F16; F16B; F16B37/00; F16B37/12; F16B37/122; F16B39/00; F16B39/02; F16B5/00; F16B5/01; B; B29; B29C; B29C65/00; B29C65/48; B29C65/52; B29C65/54; B29C65/546; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/947; Y10S411/955; Y10S411/965
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US692841A
Cited
US2286982A
Cited
FR897649A
Cited
US2462603A
Cited
US2607447A
Cited
US2585557A
Cited
GB647302A
Cited
GB657359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |