Patent US2328697A successfully refreshed from Google Patents.
US2328697A
Expired / Lapsed
US
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Limit switch and control system combination
Assignee: Electric Controller and Manufacturing Co LLC
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Filing: 1942-09-05
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Granted: 1943-09-07
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Expires: 1962-09-05
Abstract
No abstract record available.
Inventors
- 👤 Paul G White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:02
CPC Classifications
B; B66; B66C; B66C13/00; B66C13/18; B66C13/50
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) | 1946-09-06 | 1947-03-08 | 1947-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-09-06 | 1951-03-08 | 1951-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-09-06 | 1955-03-08 | 1955-09-07 | $7700.00 | Window Closed / Lapsed |