US3526420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-locking seam
Assignee: TDK Micronas GmbH
•
Filing: 1968-05-22
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Granted: 1970-09-01
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Expires: 1988-05-22
Abstract
No abstract record available.
Inventors
- 👤 Salvatore Thomas Brancaleone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:35
CPC Classifications
F; F16; F16B; F16B5/00; B; B21; B21D; B21D39/00; F16B17/00; F16B7/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49917; Y10T29/49918; Y10T29/49924; Y10T29/49936; Y10T403/00; Y10T403/49; Y10T403/4966
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2374270A
Cited
US2486769A
Cited
US2362902A
Cited
US3019733A
Cited
US2981669A
Cited
US3030850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |