Patent US2806159A successfully refreshed from Google Patents.
US2806159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual rotating electromagnetic unit
Assignee: Honeywell Inc
•
Filing: 1954-10-05
•
Granted: 1957-09-10
•
Expires: 1974-10-05
Abstract
No abstract record available.
Inventors
- 👤 Donald F Sheldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:01
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/42
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US859369A
Cited
US912144A
Cited
US1196713A
Cited
US1094389A
Cited
US1275665A
Cited
US1595550A
Cited
US1562263A
Cited
GB282876A
Cited
GB418659A
Cited
US2206920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |