Patent US1717171A successfully refreshed from Google Patents.
US1332182A
Expired / Lapsed
US
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System of automatic control
Assignee: Leeds and Northrup Co
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Filing: 1917-08-01
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Granted: 1920-02-24
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Expires: 1937-08-01
Abstract
No abstract record available.
Inventors
- 👤 Morris E Leeds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:28
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0208; G; G05; G05B; G05B1/00; G05B1/01; G05B1/04; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/2037; G05D23/2039
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) | 1923-02-23 | 1923-08-25 | 1924-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-02-23 | 1927-08-25 | 1928-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-02-23 | 1931-08-25 | 1932-02-24 | $7700.00 | Window Closed / Lapsed |