US3513529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing cellular structures
Assignee: Individual
•
Filing: 1968-04-12
•
Granted: 1970-05-26
•
Expires: 1988-04-12
Abstract
No abstract record available.
Inventors
- 👤 Aaron L Hitchens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:36
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0089; B21; B21D; B21D47/00; B32; B32B; B32B3/00; B32B3/10; B32B3/12; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366; Y10T29/49787; Y10T29/49826; Y10T29/49888
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA555336A
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US2428979A
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US2674295A
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US2898815A
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US2816355A
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US2999306A
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US3164507A
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US3166831A
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US3345735A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |