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Patent US3521427A successfully refreshed from Google Patents.
US3521427A
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Apparatus and method for erecting a carrier
Assignee: Fibreboard Corp
•
Filing: 1967-08-30
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Granted: 1970-07-21
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Expires: 1987-08-30
Abstract
No abstract record available.
Inventors
- 👤 Helmut E W Masch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:07
CPC Classifications
B; B31; B31B; B31B50/00; B31B2100/00; B31B2120/00; B31B2120/30; B31B50/004; B31B50/0044; B31B50/006; B31B50/02; B31B50/04; B31B50/06; B31B50/74; B31B50/76; B31B50/80; B31B50/802
Claims Analysis
Total Claims: 0
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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) | 1973-07-20 | 1974-01-19 | 1974-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-20 | 1978-01-19 | 1978-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-20 | 1982-01-19 | 1982-07-21 | $7700.00 | Window Closed / Lapsed |