US2725959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable collapsible spar tree
Assignee: Individual
•
Filing: 1950-06-30
•
Granted: 1955-12-06
•
Expires: 1970-06-30
Abstract
No abstract record available.
Inventors
- 👤 John W Plano
- 👤 Burl M Ensley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:43
CPC Classifications
E; E04; E04H; E04H12/00; E04H12/18; E04H12/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US798666A
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US1134707A
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US1134002A
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US1182387A
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US1511679A
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US1557075A
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US1712179A
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US1880071A
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FR686509A
Cited
US2224851A
Cited
US2508835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |