Patent US3021014A successfully refreshed from Google Patents.
US3021014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crane boom structure
Assignee: Link Belt Speeder Corp
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Filing: 1959-01-19
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Granted: 1962-02-13
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Expires: 1979-01-19
Abstract
No abstract record available.
Inventors
- 👤 Korensky Edwin
- 👤 Robert E Thune
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:17
CPC Classifications
E; E04; E04H; E04H12/00; E04H12/02; E04H12/08; E04H12/10; B; B66; B66C; B66C23/00; B66C23/62; B66C23/64; B66C23/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |