Patent US2869325A successfully refreshed from Google Patents.
US2869325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic drive system for portable builder's hoist
Assignee: TUBULAR STRUCTURES CORP OF AMERICA
•
Filing: 1955-04-25
•
Granted: 1959-01-20
•
Expires: 1975-04-25
Abstract
No abstract record available.
Inventors
- 👤 Samuely Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:21
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/24; B66B9/00; B66B9/16; B66D; B66D1/00; B66D1/02; B66D1/08; B66D2700/00; B66D2700/01; B66D2700/0125; B66D2700/0133
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |