US2742545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: SUNDT ENGINEERING Co
•
Filing: 1953-05-12
•
Granted: 1956-04-17
•
Expires: 1973-05-12
Abstract
No abstract record available.
Inventors
- 👤 Edward V Sundt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:58
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/30; H01H85/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1507194A
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GB318996A
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US1858157A
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US1957345A
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US1927372A
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US2206785A
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US2386060A
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GB566040A
Cited
US2417692A
Cited
US2673910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |