Patent US645087A successfully refreshed from Google Patents.
US645087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Track-gage.
Assignee: EDWARD B LINSLEY
•
Filing: 1899-05-27
•
Granted: 1900-03-13
•
Expires: 1919-05-27
Abstract
No abstract record available.
Inventors
- 👤 John D Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:01
CPC Classifications
E; E01; E01B; E01B35/00; E01B35/02; E01B2203/00; E01B2203/16
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) | 1903-03-13 | 1903-09-12 | 1904-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-03-13 | 1907-09-12 | 1908-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-03-13 | 1911-09-12 | 1912-03-13 | $7700.00 | Window Closed / Lapsed |