Patent US1396178A successfully refreshed from Google Patents.
US3443784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking mechanism for chair pedestals
Assignee: CRAMER Inc A CORP OF KS
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Filing: 1967-04-05
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Granted: 1969-05-13
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Expires: 1987-04-05
Abstract
No abstract record available.
Inventors
- 👤 Thomas G Walkinshaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:40
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/20; A47C3/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1731461A
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US2310346A
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US2591261A
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US2780277A
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US2909212A
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US3129568A
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US3306567A
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US3327985A
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US3443785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |