US3377639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable floor treatment machine
Assignee: ROSS S STEVENSON
•
Filing: 1965-06-14
•
Granted: 1968-04-16
•
Expires: 1985-06-14
Abstract
No abstract record available.
Inventors
- 👤 Ross S Stevenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:33
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4041; A47L11/02; A47L11/04; A47L11/08; A47L11/085; A47L11/10; A47L11/14; A47L11/145; A47L11/4063; A47L11/4066; A47L11/4069; A47L11/4072; A47L11/4075; A47L11/408
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |