US1009848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunnel-form.
Assignee: BLAW COLLAPSIBLE STEEL CENTERING Co
•
Filing: 1910-02-04
•
Granted: 1911-11-28
•
Expires: 1930-02-04
Abstract
No abstract record available.
Inventors
- 👤 Charles D Mcarthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:56
CPC Classifications
F; F16; F16L; F16L1/00; F16L1/024; F16L1/028; F16L1/038
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1914-11-27 | 1915-05-29 | 1915-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-11-27 | 1919-05-29 | 1919-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-11-27 | 1923-05-29 | 1923-11-28 | $7700.00 | Window Closed / Lapsed |