US1648944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nut-tightening apparatus
Assignee: AT&T Inc
•
Filing: 1925-11-27
•
Granted: 1927-11-15
•
Expires: 1945-11-27
Abstract
No abstract record available.
Inventors
- 👤 Hofstetter Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:00
CPC Classifications
B; B23; B23P; B23P19/00; B23P19/04; B23P19/06; B23P19/065; B25; B25B; B25B23/00; B25B23/14; B25B23/147; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53687
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) | 1930-11-14 | 1931-05-16 | 1931-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-11-14 | 1935-05-16 | 1935-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-11-14 | 1939-05-16 | 1939-11-15 | $7700.00 | Window Closed / Lapsed |