US3526934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interlocking spacers
Assignee: DAVID H OWEN SR
•
Filing: 1968-08-20
•
Granted: 1970-09-08
•
Expires: 1988-08-20
Abstract
No abstract record available.
Inventors
- 👤 David H Owen Sr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:26
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/04; F16B7/0433; F16L; F16L3/00; F16L3/22; F16L3/223; F16L3/2235
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1608184A
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FR693497A
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US2388201A
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US2375513A
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US2613413A
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US2791461A
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US2877990A
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US3023989A
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US3160175A
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FR1439861A
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US3421187A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |