US3486751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsable swing support with releasable fastening means
Assignee: JAMISON Inc
•
Filing: 1966-05-24
•
Granted: 1969-12-30
•
Expires: 1986-05-24
Abstract
No abstract record available.
Inventors
- 👤 Herbert M Hatfield
- 👤 Egbert Grant Jamison
- 👤 Robert Warren Jamison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:29
CPC Classifications
A; A63; A63G; A63G9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US113530A
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US822202A
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US2172137A
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US2736334A
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US2894527A
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US2997317A
Cited
US3145013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |