US1254709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tapping-machine.
Assignee: AT&T Inc
•
Filing: 1916-07-28
•
Granted: 1918-01-29
•
Expires: 1936-07-28
Abstract
No abstract record available.
Inventors
- 👤 David Levinger
- 👤 Olof Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:44
CPC Classifications
B; B23; B23B; B23B39/00; B23B39/16; B23B39/22; Y; Y10; Y10S; Y10S470/00; Y10S470/907; Y10T; Y10T408/00; Y10T408/36; Y10T408/375; Y10T408/378; Y10T408/3792; Y10T408/47; Y10T408/50
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) | 1921-01-28 | 1921-07-30 | 1922-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-01-28 | 1925-07-30 | 1926-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-01-28 | 1929-07-30 | 1930-01-29 | $7700.00 | Window Closed / Lapsed |