US3231304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Berth with spring suspension
Assignee: Individual
•
Filing: 1961-07-14
•
Granted: 1966-01-25
•
Expires: 1981-07-14
Abstract
No abstract record available.
Inventors
- 👤 Paul W Coup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:17
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/24; B60N2/32; B60N2/34; B62; B62D; B62D33/00; B62D33/06; B62D33/0612
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US359388A
Cited
US1004957A
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US1055277A
Cited
US1693571A
Cited
US1647247A
Cited
US1905588A
Cited
US2075746A
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DE939553C
Cited
US2845133A
Cited
US3067437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |