US2562022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular supporting base
Assignee: Individual
•
Filing: 1949-03-24
•
Granted: 1951-07-24
•
Expires: 1969-03-24
Abstract
No abstract record available.
Inventors
- 👤 Frederick L Duer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:32
CPC Classifications
A; A47; A47B; A47B13/00; A47B13/02; A47B13/06; A47B2013/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US353137A
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US770406A
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US2172611A
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US1162147A
Cited
US1162148A
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US1187972A
Cited
US1380042A
Cited
US1951499A
Cited
US1997660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |