US2990979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment for floor treating apparatus
Assignee: Signal Manufacturing Co
•
Filing: 1959-01-27
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Granted: 1961-07-04
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Expires: 1979-01-27
Abstract
No abstract record available.
Inventors
- 👤 Harrison Robert Gordon
- 👤 Joseph W Manning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:32
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4075; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/162; A47L11/1625; A47L11/408; A47L11/4083; A47L11/4088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1860168A
Cited
US1898357A
Cited
US2291267A
Cited
US2566479A
Cited
US2775240A
Cited
US2768401A
Cited
US2851201A
Cited
US2812117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |