Patent US3439464A successfully refreshed from Google Patents.
US3439464A
Expired / Lapsed
US
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Floor and wall system
Assignee: AMERICAN SPORTS COURTS INC A PA CORP
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Filing: 1967-04-12
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Granted: 1969-04-22
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Expires: 1987-04-12
Abstract
No abstract record available.
Inventors
- 👤 Ray E Omholt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:00
CPC Classifications
E; E04; E04F; E04F15/00; E04F15/02; E04F15/04; E04B; E04B1/00; E04B1/02; E04B1/10; E04F13/00; E04F13/07; E04F13/08; E04F13/0801; E04F13/0803; E04F13/081; E04F13/0821; E04F13/0823; E04F13/0826; E04F2201/00; E04F2201/01; E04F2201/0107; E04F2201/02; E04F2201/023; E04F2201/025; E04F2201/05; E04F2201/0517
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3031725A
Cited
US1507813A
Cited
US1637634A
Cited
US1696104A
Cited
US1944237A
Cited
US1974259A
Cited
US2116737A
Cited
US3267630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |