US3071216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sandwich construction incorporating discrete metal core elements and method of fabrication thereof
Assignee: Sonobond Corp
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Filing: 1958-12-29
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Granted: 1963-01-01
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Expires: 1978-12-29
Abstract
No abstract record available.
Inventors
- 👤 Jones James Byron
- 👤 William C Potthoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:17
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12264; Y10T428/1234; Y10T428/12347; Y10T428/12472; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
25 words
A STRUCTURAL SANDWICH ARRANGEMENT COMPRISING A PAIR OF SPACED METAL SKINS, A PLURALITY OF HOLLOW SPACER ELEMENTS COMPRISING A FLANGED BASE AND A TOP SURFACE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |