Patent EP0093512A1 successfully refreshed from Google Patents.
US1020002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrugated culvert.
Assignee: Individual
•
Filing: 1911-11-23
•
Granted: 1912-03-12
•
Expires: 1931-11-23
Abstract
No abstract record available.
Inventors
- 👤 George W Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:27
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/08; Y; Y10; Y10S; Y10S285/00; Y10S285/903
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) | 1915-03-12 | 1915-09-11 | 1916-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1919-03-12 | 1919-09-11 | 1920-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1923-03-12 | 1923-09-11 | 1924-03-12 | $7700.00 | Window Closed / Lapsed |