Patent US3531346A successfully refreshed from Google Patents.
US3531346A
Expired / Lapsed
US
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Method of fabricating a cast spacer-block
Assignee: GKN Aerospace Transparency Systems Inc
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Filing: 1967-05-15
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Granted: 1970-09-29
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Expires: 1987-05-15
Abstract
No abstract record available.
Inventors
- 👤 John E Jameson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:34
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10807; B32B17/10899; B32B17/10908; B32B17/10917; E; E06; E06B; E06B3/00; E06B3/66; E06B3/663; E06B3/66309; E06B3/66328
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) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |