Patent US2826280A successfully refreshed from Google Patents.
US2826280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible mast structures for hydraulic towers
Assignee: J H HOLAN CORP
•
Filing: 1955-05-16
•
Granted: 1958-03-11
•
Expires: 1975-05-16
Abstract
No abstract record available.
Inventors
- 👤 Herman J Troche
- 👤 Holan James Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:12
CPC Classifications
A; A62; A62B; A62B5/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |