US3153798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable supporting structure
Assignee: Individual
•
Filing: 1962-06-29
•
Granted: 1964-10-27
•
Expires: 1982-06-29
Abstract
No abstract record available.
Inventors
- 👤 Wesley B Drevitson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:25
CPC Classifications
B; B65; B65G; B65G69/00; B65G69/28; B65G69/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US596867A
Cited
US1567388A
Cited
US2098469A
Cited
US2624058A
Cited
GB688285A
Cited
US2835931A
Cited
GB825512A
Cited
US2890089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |