US2972452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake system for unwinders
Assignee: Individual
•
Filing: 1957-06-12
•
Granted: 1961-02-21
•
Expires: 1977-06-12
Abstract
No abstract record available.
Inventors
- 👤 Aumann Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:44
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/02; B65H59/04; B65H23/00; B65H23/04; B65H23/06; B65H23/063; B65H2701/00; B65H2701/30; B65H2701/31
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) | 1964-02-21 | 1964-08-22 | 1965-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-21 | 1968-08-22 | 1969-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-21 | 1972-08-22 | 1973-02-21 | $7700.00 | Window Closed / Lapsed |