US3037592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crisscross core for laminated metal structures
Assignee: Lockheed Martin Corp
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Filing: 1957-08-23
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Granted: 1962-06-05
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Expires: 1977-08-23
Abstract
No abstract record available.
Inventors
- 👤 Charles W Shipley
- 👤 Chester W Lawrence
- 👤 Michael E Wasilisin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:10
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/3405; B; B64; B64C; B64C3/00; E04C2002/3444; E04C2002/3455; E04C2002/3472; E04C2002/3494; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T428/00; Y10T428/12; Y10T428/1234; Y10T428/1241; Y10T428/24; Y10T428/24149; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24711; Y10T428/24719
Claims Analysis
Total Claims: 0
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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) | 1965-06-04 | 1965-12-04 | 1966-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-04 | 1969-12-04 | 1970-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-04 | 1973-12-04 | 1974-06-05 | $7700.00 | Window Closed / Lapsed |