US3462907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Utility pole with curved,laminated wood beams
Assignee: Potlatch Forests Inc
•
Filing: 1967-05-19
•
Granted: 1969-08-26
•
Expires: 1987-05-19
Abstract
No abstract record available.
Inventors
- 👤 Herbert B Mckean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:28
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/30; E04H; E04H12/00; E04H12/02; E04H12/04; E04H12/06; E04H12/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US731109A
Cited
US764472A
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US823377A
Cited
US1189596A
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FR614659A
Cited
US1696773A
Cited
US2562022A
Cited
AT167336B
Cited
FR1129240A
Cited
GB873354A
Cited
US3299586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |