US2754012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for erecting elevated structures
Assignee: Chicago Bridge and Iron Co
•
Filing: 1952-10-29
•
Granted: 1956-07-10
•
Expires: 1972-10-29
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Hines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:08
CPC Classifications
E; E04; E04H; E04H12/00; E04H12/34; B; B66; B66C; B66C23/00; B66C23/18; B66C23/26; B66C23/28; B66C23/32; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49895; Y10T29/49901
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR423097A
Cited
GB322099A
Cited
US2079663A
Cited
US2355874A
Cited
US2432528A
Cited
US2438542A
Cited
US2623643A
Cited
US2605540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |