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Patent US2149453A successfully refreshed from Google Patents.
US2149453A
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Vacuum scrubber
Assignee: Reconstruction Finance Corp
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Filing: 1936-10-08
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Granted: 1939-03-07
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Expires: 1956-10-08
Abstract
No abstract record available.
Inventors
- 👤 James H Longshore
- 👤 Dave E Smalley
- 👤 Edward L Petty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:28
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/408; A47L11/4088; A47L11/29; A47L11/30; A47L11/302; A47L11/305; A47L11/4002; A47L11/4008; A47L11/4013; A47L11/4036; A47L11/4038; A47L11/4044; A47L11/4052; A47L11/4058; A47L11/4063; A47L11/4069; A47L11/4075; A47L11/4083
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) | 1942-03-06 | 1942-09-05 | 1943-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-03-06 | 1946-09-05 | 1947-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-03-06 | 1950-09-05 | 1951-03-07 | $7700.00 | Window Closed / Lapsed |