Patent US2521780A successfully refreshed from Google Patents.
US2521780A
Expired / Lapsed
US
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Cushion or receptacle
Assignee: Individual
•
Filing: 1947-06-12
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Granted: 1950-09-12
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Expires: 1967-06-12
Abstract
No abstract record available.
Inventors
- 👤 Bertha A Dodd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:32
CPC Classifications
A; A47; A47G; A47G9/00; A47G9/10; A47G9/1036; A61; A61F; A61F7/00; A61F7/08; A47G2009/003; A47G2009/008; A61F2007/0001; A61F2007/0002; A61F2007/0009; A61F2007/0011; A61F2007/0012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1382531A
Cited
FR773142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |