US3520004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming pool cover anchor
Assignee: Individual
•
Filing: 1967-10-20
•
Granted: 1970-07-14
•
Expires: 1987-10-20
Abstract
No abstract record available.
Inventors
- 👤 Henry A Patnaude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:10
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/06; E04H4/10; Y; Y10; Y10T; Y10T24/00; Y10T24/34; Y10T24/3427; Y10T24/39; Y10T24/3916; Y10T24/47
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |