Patent US720517A successfully refreshed from Google Patents.
US720517A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making sheet-glass.
Assignee: J N CLARKE
•
Filing: 1901-11-23
•
Granted: 1903-02-10
•
Expires: 1921-11-23
Abstract
No abstract record available.
Inventors
- 👤 Robert L Frink
- 👤 Walker De Haven Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:48
CPC Classifications
C; C03; C03B; C03B15/00; C03B15/02; Y; Y10; Y10S; Y10S117/00; Y10S117/91
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) | 1906-02-09 | 1906-08-11 | 1907-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-02-09 | 1910-08-11 | 1911-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-02-09 | 1914-08-11 | 1915-02-10 | $7700.00 | Window Closed / Lapsed |