US3082504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming passages through concrete floors, and the like
Assignee: Individual
•
Filing: 1957-06-17
•
Granted: 1963-03-26
•
Expires: 1977-06-17
Abstract
No abstract record available.
Inventors
- 👤 Tatsch Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:36
CPC Classifications
E; E04; E04B; E04B5/00; E04B5/48
Claims Analysis
Total Claims: 0
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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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |