US3396501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevated floor system of grounded metal panels
Assignee: Mercantile Safe Deposit and Trust Co
•
Filing: 1966-02-21
•
Granted: 1968-08-13
•
Expires: 1986-02-21
Abstract
No abstract record available.
Inventors
- 👤 Donald L Tate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:32
CPC Classifications
E; E04; E04F; E04F15/00; E04F15/02; E04F15/024; E04F15/02447; E04F15/02452; E04F15/02405; E04F15/02435; E04F15/02441
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2391997A
Cited
GB842939A
Cited
US3157254A
Cited
US2956652A
Cited
US2956653A
Cited
US3298153A
Cited
US3279134A
Cited
US3236018A
Cited
FR1386597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |