US3455071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete ceiling plate
Assignee: Individual
•
Filing: 1968-05-02
•
Granted: 1969-07-15
•
Expires: 1988-05-02
Abstract
No abstract record available.
Inventors
- 👤 Leopold Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:09
CPC Classifications
E; E04; E04B; E04B5/00; E04B5/16; E04B5/32; E04B5/326
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US640176A
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US929470A
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AT107186B
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US1775234A
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US2618960A
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US2811850A
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US2964821A
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US3216157A
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US3276176A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |