Patent US3445901A successfully refreshed from Google Patents.
US3445901A
Expired / Lapsed
US
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Fasteners
Assignee: Brero and Co AG
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Filing: 1967-02-01
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Granted: 1969-05-27
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Expires: 1987-02-01
Abstract
No abstract record available.
Inventors
- 👤 Helmut Kamper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:45
CPC Classifications
A; A41; A41F; A41F1/00; A41F1/006; A44; A44B; A44B11/00; A44B11/25; A44B11/258; A44B11/2588; Y; Y10; Y10T; Y10T24/00; Y10T24/45; Y10T24/45225; Y10T24/45471; Y10T24/45524; Y10T24/45545; Y10T24/45602; Y10T24/45775; Y10T24/4588; Y10T24/45948
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) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |