Patent US3440869A successfully refreshed from Google Patents.
US3440869A
Expired / Lapsed
US
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Threaded fastener testing apparatus
Assignee: SPS Technologies LLC
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Filing: 1966-11-04
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Granted: 1969-04-29
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Expires: 1986-11-04
Abstract
No abstract record available.
Inventors
- 👤 Russell J Hardiman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:24
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/0028; G01L5/0042; G01L1/00; G01L1/20; G01L1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2030464A
Cited
US2403952A
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US2586708A
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US2712645A
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US2880409A
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US2957342A
Cited
GB882989A
Cited
SU142461A1
Cited
US3354705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |