US3521862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highway breakaway guard
Assignee: TIM G CURTNER
•
Filing: 1968-10-15
•
Granted: 1970-07-28
•
Expires: 1988-10-15
Abstract
No abstract record available.
Inventors
- 👤 Tim G Curtner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:28
CPC Classifications
E; E04; E04H; E04H17/00; E04H17/02; E04H17/06; E04H17/08; E01; E01F; E01F15/00; E01F15/02; E01F15/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US66321A
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US316599A
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US986957A
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US1121319A
Cited
US1592671A
Cited
US1843853A
Cited
US1848246A
Cited
US1855807A
Cited
US2578165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |