US3477893A
Expired / Lapsed
US
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Method and apparatus for use in making honeycomb cores
Assignee: Inventions Inc
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Filing: 1967-06-27
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Granted: 1969-11-11
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Expires: 1987-06-27
Abstract
No abstract record available.
Inventors
- 👤 Harry M Brazener
- 👤 Robert W Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:11
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/10; B32B3/12; B31; B31D; B31D3/00; B31D3/02; B31D3/0223; B31D3/0246; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T156/12; Y10T156/13; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1722; Y10T156/1724
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) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |