Patent US3508741A successfully refreshed from Google Patents.
US3508741A
Expired / Lapsed
US
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Fence post and method of tightening a fence
Assignee: Trefileries Leon Bekaert SPRL
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Filing: 1968-09-04
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Granted: 1970-04-28
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Expires: 1988-09-04
Abstract
No abstract record available.
Inventors
- 👤 Jan Steenhoudt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:42
CPC Classifications
E; E04; E04H; E04H17/00; E04H17/02; E04H17/127; E04H17/133; E04H17/139; E04H17/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US172460A
Cited
US924630A
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US1177327A
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US1475884A
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US1604002A
Cited
US2571347A
Cited
US3173662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-27 | 1973-10-27 | 1974-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-27 | 1977-10-27 | 1978-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-27 | 1981-10-27 | 1982-04-28 | $7700.00 | Window Closed / Lapsed |