US1615643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ward-leonard drive
Assignee: General Electric Co
•
Filing: 1925-07-27
•
Granted: 1927-01-25
•
Expires: 1945-07-27
Abstract
No abstract record available.
Inventors
- 👤 Bruce D Mickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:24
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/34; H02P7/347; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5152; Y10T29/5154; Y10T29/5158
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) | 1930-01-24 | 1930-07-26 | 1931-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-01-24 | 1934-07-26 | 1935-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-01-24 | 1938-07-26 | 1939-01-25 | $7700.00 | Window Closed / Lapsed |