US2866927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent-magnet armature for polarized electromagnetic systems, in particular for polarized relays
Assignee: Siemens and Halske AG
•
Filing: 1955-09-07
•
Granted: 1958-12-30
•
Expires: 1975-09-07
Abstract
No abstract record available.
Inventors
- 👤 Berg Herbert
- 👤 Fischer Josef
- 👤 Krautwald Herbert
- 👤 Ruhland Alois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:06
CPC Classifications
H; H01; H01H; H01H49/00; H01H51/00; H01H51/22; H01H51/2227
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CA479106A
Cited
US1256426A
Cited
US1847012A
Cited
US2435487A
Cited
DE923563C
Cited
US2517214A
Cited
US2716795A
Cited
FR1103207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |