Patent US1400545A successfully refreshed from Google Patents.
US1400545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nut-lock
Assignee: Singer Co
•
Filing: 1919-05-31
•
Granted: 1921-12-20
•
Expires: 1939-05-31
Abstract
No abstract record available.
Inventors
- 👤 Hleb Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:04
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/02; F16B2/00; F16B2/20; F16B2/22; F16B2/24; F16B2/241; F16B2/245; F16B2/246
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) | 1924-12-19 | 1925-06-20 | 1925-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-12-19 | 1929-06-20 | 1929-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-12-19 | 1933-06-20 | 1933-12-20 | $7700.00 | Window Closed / Lapsed |