US3485384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of climbing a tower crane for constructing high buildings
Assignee: Mitsui Construction Co Ltd
•
Filing: 1967-08-10
•
Granted: 1969-12-23
•
Expires: 1987-08-10
Abstract
No abstract record available.
Inventors
- 👤 Sei Nikai
- 👤 Yu Kojima
- 👤 Tsuneo Mukai
- 👤 Shigeru Hirata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:57
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/18; B66C23/26; B66C23/28; B66C23/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR1113697A
Cited
US3127996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |