US3504472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable patio floor structure
Assignee: ANDREW B CLEMENT
•
Filing: 1967-09-12
•
Granted: 1970-04-07
•
Expires: 1987-09-12
Abstract
No abstract record available.
Inventors
- 👤 Andrew B Clement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:54
CPC Classifications
E; E01; E01C; E01C3/00; E01C3/006; E04; E04B; E04B5/00; E04B5/02; E04B5/14; E04F; E04F15/00; E04F15/02; E04F15/02005; E04F15/02194; E04F15/08; E04F15/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-06 | 1973-10-06 | 1974-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-06 | 1977-10-06 | 1978-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-06 | 1981-10-06 | 1982-04-07 | $7700.00 | Window Closed / Lapsed |