US2957736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stop for folding support frame
Assignee: J R Clark Co
•
Filing: 1958-10-15
•
Granted: 1960-10-25
•
Expires: 1978-10-15
Abstract
No abstract record available.
Inventors
- 👤 Kemuel B Olander
- 👤 Donald J Munson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:39
CPC Classifications
A; A47; A47B; A47B3/00; A47B3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US687772A
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US907423A
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US2514735A
Cited
US2666681A
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US2675286A
Cited
US2793924A
Cited
US2709120A
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US2860022A
Cited
US2845317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |