US3385555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reusable panel and form system for concrete construction
Assignee: Individual
•
Filing: 1965-08-23
•
Granted: 1968-05-28
•
Expires: 1985-08-23
Abstract
No abstract record available.
Inventors
- 👤 John R Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:27
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/06; E04G11/08; E04G11/10; B; B28; B28B; B28B7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3123887A
Cited
US1549607A
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US1552334A
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US1807943A
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US1970547A
Cited
US2297899A
Cited
US3103730A
Cited
US3204918A
Cited
US3241802A
Cited
US3292893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |