Patent USH723H successfully refreshed from Google Patents.
Patent US1520180A successfully refreshed from Google Patents.
US1520180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window fastener
Assignee: Individual
•
Filing: 1922-07-25
•
Granted: 1924-12-23
•
Expires: 1942-07-25
Abstract
No abstract record available.
Inventors
- 👤 England Nathan Roland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:40
CPC Classifications
E; E05; E05D; E05D13/00; E05D13/04; E05D13/06; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/148; Y; Y10; Y10S; Y10S292/00; Y10S292/20; Y10S292/35; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/081; Y10T292/0848; Y10T292/0849; Y10T292/086; Y10T292/0911; Y10T292/0945; Y10T292/0951; Y10T292/1039; Y10T292/1041; Y10T292/1043; Y10T292/1075; Y10T292/1083
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) | 1927-12-23 | 1928-06-23 | 1928-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-12-23 | 1932-06-23 | 1932-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-12-23 | 1936-06-23 | 1936-12-23 | $7700.00 | Window Closed / Lapsed |