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US2969557A
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Assignee: CLARKE FLOOR MACHINE Co
•
Filing: 1956-11-30
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Granted: 1961-01-31
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Expires: 1976-11-30
Abstract
No abstract record available.
Inventors
- 👤 William L Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:40
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4072; A47L11/29; A47L11/30; A47L11/302; A47L11/305; A47L11/4052; A47L11/4058; A47L11/4061; A47L11/4063; A47L11/4066; A47L11/4069; E; E01; E01H; E01H1/00; E01H1/02; E01H1/05; E01H1/053; E01H1/10; E01H1/101; E01H1/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |