US1970995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for winding wire on rotary drums
Assignee: Berkenhoff & Drebes A G
•
Filing: 1932-04-28
•
Granted: 1934-08-21
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Expires: 1952-04-28
Abstract
No abstract record available.
Inventors
- 👤 Diehl Johannes Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:57
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/40; B65H54/42; B21; B21C; B21C47/00; B21C47/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-08-20 | 1938-02-19 | 1938-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-08-20 | 1942-02-19 | 1942-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-08-20 | 1946-02-19 | 1946-08-21 | $7700.00 | Window Closed / Lapsed |