US1460165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Form for tunnels and culverts
Assignee: BLAWKNOX Co
•
Filing: 1920-04-13
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Granted: 1923-06-26
•
Expires: 1940-04-13
Abstract
No abstract record available.
Inventors
- 👤 Charles D Mcarthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:49
CPC Classifications
E; E21; E21D; E21D11/00; E21D11/04; E21D11/10; E21D11/102; E01; E01H; E01H5/00; E01H5/04; E01H5/08; E01H5/09; E01H5/096
Claims Analysis
Total Claims: 0
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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) | 1926-06-25 | 1926-12-25 | 1927-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-06-25 | 1930-12-25 | 1931-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-06-25 | 1934-12-25 | 1935-06-26 | $7700.00 | Window Closed / Lapsed |