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Patent US2730381A successfully refreshed from Google Patents.
US2730381A
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Reducing washer assembly for oversized holes
Assignee: ABB Installation Products Inc
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Filing: 1952-09-17
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Granted: 1956-01-10
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Expires: 1972-09-17
Abstract
No abstract record available.
Inventors
- 👤 Lawrence M Curtiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:57
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/06; H02G3/0616; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49732; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49922; Y10T403/00; Y10T403/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1069877A
Cited
US1310190A
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US1012073A
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US1106964A
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US1391396A
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US2358795A
Cited
US2508655A
Cited
US2636658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |