US1963653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaning machine
Assignee: Individual
•
Filing: 1932-03-29
•
Granted: 1934-06-19
•
Expires: 1952-03-29
Abstract
No abstract record available.
Inventors
- 👤 Theron C Curtiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:48
CPC Classifications
G; G07; G07F; G07F17/00; G07F11/00; G07F11/02; G07F11/04; G07F11/16; G07F11/165; G07F11/1657; G07F17/20; Y; Y10; Y10S; Y10S55/00; Y10S55/08; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6918; Y10T137/6932; Y10T137/6943
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) | 1937-06-18 | 1937-12-18 | 1938-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-06-18 | 1941-12-18 | 1942-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-06-18 | 1945-12-18 | 1946-06-19 | $7700.00 | Window Closed / Lapsed |