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Patent US3492906A successfully refreshed from Google Patents.
US3492906A
Expired / Lapsed
US
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Shank strength fastener
Assignee: AVIA INSTRUMENT Co
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Filing: 1968-09-09
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Granted: 1970-02-03
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Expires: 1988-09-09
Abstract
No abstract record available.
Inventors
- 👤 Frank W Hauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:59
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/12; F16B33/00; F16B33/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US806407A
Cited
US1869322A
Cited
US2245419A
Cited
US2267923A
Cited
GB750894A
Cited
CH321629A
Cited
US3316795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |