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US2926022A
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Assignee: Individual
•
Filing: 1957-07-31
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Granted: 1960-02-23
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Expires: 1977-07-31
Abstract
No abstract record available.
Inventors
- 👤 David H Nau
- 👤 De Witt H Doane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:27
CPC Classifications
A; A47; A47B; A47B31/00; B; B62; B62B; B62B3/00; B62B3/002; B62B3/005; B62B3/006; B62B2204/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US912035A
Cited
US1367672A
Cited
US1691621A
Cited
US1943023A
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US2194177A
Cited
US2689778A
Cited
US2820559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |