US1625463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diamond lap
Assignee: AT&T Inc
•
Filing: 1922-12-29
•
Granted: 1927-04-19
•
Expires: 1942-12-29
Abstract
No abstract record available.
Inventors
- 👤 Gauthier Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:13
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/04; B24D3/06; B24D3/08; B24D18/00; B24D18/0009; Y; Y10; Y10S; Y10S76/00; Y10S76/05; Y10S76/12; Y10T; Y10T407/00; Y10T407/26
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) | 1930-04-18 | 1930-10-18 | 1931-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-04-18 | 1934-10-18 | 1935-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-04-18 | 1938-10-18 | 1939-04-19 | $7700.00 | Window Closed / Lapsed |