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Patent US3187620A successfully refreshed from Google Patents.
US3187620A
Expired / Lapsed
US
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Expansion anchor with rotationpreventing teeth
Assignee: Individual
•
Filing: 1962-06-04
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Granted: 1965-06-08
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Expires: 1982-06-04
Abstract
No abstract record available.
Inventors
- 👤 Fischer Artur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:25
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/001; F16B13/12; F16B13/124
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1227627A
Cited
US2006813A
Cited
FR800894A
Cited
US2172125A
Cited
CH295595A
Cited
AT214125B
Cited
US3022701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |