Patent US3421404A successfully refreshed from Google Patents.
US3421404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion bolt assembly
Assignee: HAROLD J JACOBS
•
Filing: 1967-12-13
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Granted: 1969-01-14
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Expires: 1987-12-13
Abstract
No abstract record available.
Inventors
- 👤 Harold J Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:43
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/04; F16B13/06; F16B13/063; F16B13/066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1560095A
Cited
US1850768A
Cited
US1852297A
Cited
US2028881A
Cited
FR1240036A
Cited
US3091990A
Cited
FR1339663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |