Patent US810463A successfully refreshed from Google Patents.
US810463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making air-hole glassware.
Assignee: NATIONAL ELECTRIC LAMP Co
•
Filing: 1905-02-24
•
Granted: 1906-01-23
•
Expires: 1925-02-24
Abstract
No abstract record available.
Inventors
- 👤 Frank H Blackburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:21
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; C03B23/025; C03B23/0252
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) | 1909-01-22 | 1909-07-24 | 1910-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-01-22 | 1913-07-24 | 1914-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-01-22 | 1917-07-24 | 1918-01-23 | $7700.00 | Window Closed / Lapsed |