Patent US1828748A successfully refreshed from Google Patents.
US1828748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hoisting apparatus
Assignee: Individual
•
Filing: 1928-07-26
•
Granted: 1931-10-27
•
Expires: 1948-07-26
Abstract
No abstract record available.
Inventors
- 👤 Charles R Pratt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:39
CPC Classifications
B; B66; B66D; B66D1/00; B66D1/02; B66D1/12; B66D2700/00; B66D2700/01; B66D2700/0125; B66D2700/0141; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19051; Y10T74/19056
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) | 1934-10-26 | 1935-04-27 | 1935-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-10-26 | 1939-04-27 | 1939-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-10-26 | 1943-04-27 | 1943-10-27 | $7700.00 | Window Closed / Lapsed |