US2835522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinged support
Assignee: Marshall Serto & Co
•
Filing: 1955-07-28
•
Granted: 1958-05-20
•
Expires: 1975-07-28
Abstract
No abstract record available.
Inventors
- 👤 Ferdinand N Serto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:32
CPC Classifications
A; A47; A47B; A47B1/00; A47B1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US195325A
Cited
US1552988A
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US1713116A
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US1840492A
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US1788102A
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US1874424A
Cited
US1918040A
Cited
US2278810A
Cited
US2284003A
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GB616801A
Cited
US2456037A
Cited
US2577399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |