US3067494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature sandwich structure
Assignee: North American Aviation Corp
•
Filing: 1958-05-28
•
Granted: 1962-12-11
•
Expires: 1978-05-28
Abstract
No abstract record available.
Inventors
- 👤 Frank N Spain
- 👤 Carl A Van Pappelendam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:32
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; B; B64; B64C; B64C3/00; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/78; E04B1/80; E04B1/806; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12347; Y10T428/1241; Y10T428/12417
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1560996A
Cited
US2292373A
Cited
GB561214A
Cited
US2356675A
Cited
US2746139A
Cited
US2791386A
Cited
FR1124180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |