US3236012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming pool steps
Assignee: Individual
•
Filing: 1964-11-06
•
Granted: 1966-02-22
•
Expires: 1984-11-06
Abstract
No abstract record available.
Inventors
- 👤 Merrill L Laven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:58
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/144
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US700522A
Cited
US815840A
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US1019870A
Cited
US1654073A
Cited
FR832632A
Cited
GB531040A
Cited
US2695689A
Cited
US2936504A
Cited
US3015191A
Cited
US2974746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |