US3435567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall construction
Assignee: KENNETH A TYSON
•
Filing: 1966-08-18
•
Granted: 1969-04-01
•
Expires: 1986-08-18
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Tyson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:04
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/04; E04C2/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US891313A
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US1259698A
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US1607114A
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US2014778A
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US2772560A
Cited
US2903878A
Cited
FR1150523A
Cited
US2979801A
Cited
FR1215814A
Cited
US3239982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |