Patent US3131742A successfully refreshed from Google Patents.
US3131742A
Expired / Lapsed
US
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Sealing and locking washer for sheet metal nut
Assignee: Bishop and Babcock Corp
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Filing: 1961-01-06
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Granted: 1964-05-05
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Expires: 1981-01-06
Abstract
No abstract record available.
Inventors
- 👤 Robert A Munse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:23
CPC Classifications
F; F16; F16B; F16B43/00; F16B43/001; F16B33/00; F16B33/004; F16B37/00; F16B37/02; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/947
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2761349A
Cited
FR1240405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |