US3480257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guard rail stanchion
Assignee: JESSE T BOURN
•
Filing: 1968-01-05
•
Granted: 1969-11-25
•
Expires: 1988-01-05
Abstract
No abstract record available.
Inventors
- 👤 Jesse T Bourn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:28
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/32; E04G21/3204; E04G21/3223; E04G21/3233; E04G21/3242; E04G5/00; E04G5/04; E04G5/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2987299A
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US3084759A
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US3178139A
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US3333807A
Cited
US3351311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |