US980977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaning apparatus.
Assignee: Individual
•
Filing: 1910-06-27
•
Granted: 1911-01-10
•
Expires: 1930-06-27
Abstract
No abstract record available.
Inventors
- 👤 Paul C Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:45
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/04; Y; Y10; Y10S; Y10S15/00; Y10S15/08; Y10S55/00; Y10S55/26
Claims Analysis
Total Claims: 0
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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) | 1914-01-09 | 1914-07-11 | 1915-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-01-09 | 1918-07-11 | 1919-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-01-09 | 1922-07-11 | 1923-01-10 | $7700.00 | Window Closed / Lapsed |