Patent US3413661A successfully refreshed from Google Patents.
US3413661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming pool and cover construction
Assignee: NORMAN JACK ROSS
•
Filing: 1965-10-21
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Granted: 1968-12-03
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Ross Norman Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:40
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/06; E04H4/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR399969A
Cited
US1536766A
Cited
GB386404A
Cited
US1918437A
Cited
US2133587A
Cited
US2337573A
Cited
US2388990A
Cited
US2366979A
Cited
GB705811A
Cited
US3309716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |