US2821668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time delay relay means
Assignee: Westinghouse Electric Corp
•
Filing: 1954-09-03
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Granted: 1958-01-28
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Expires: 1974-09-03
Abstract
No abstract record available.
Inventors
- 👤 Bascum O Austin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:28
CPC Classifications
H; H01; H01H; H01H47/00; H01H47/02; H01H47/18; H02; H02H; H02H1/00; H02H1/04; H02H3/00; H02H3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |