US2816993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker having switch arm mounted on fluid conducting bearing
Assignee: Allis Chalmers Corp
•
Filing: 1953-10-06
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Granted: 1957-12-17
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Expires: 1973-10-06
Abstract
No abstract record available.
Inventors
- 👤 Leonard J Linde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:46
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/12; H01H1/14; H01H1/22; B; B21; B21J; B21J13/00; B21J13/04; H01H33/00; H01H33/02; H01H33/53; H01H33/56; H01H33/70; H01H33/80; H01H33/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1887545A
Cited
DE643772C
Cited
GB457442A
Cited
GB487391A
Cited
US2330820A
Cited
US2399485A
Cited
US2347984A
Cited
US2491964A
Cited
US2734971A
Cited
CH200158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |