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US3067544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building components and structures
Assignee: Individual
•
Filing: 1959-04-21
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Granted: 1962-12-11
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Expires: 1979-04-21
Abstract
No abstract record available.
Inventors
- 👤 Willatts William Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:55
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/12; E04C3/14; E04C3/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB689957A
Cited
US1568099A
Cited
US1738854A
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US2262120A
Cited
US2477163A
Cited
DE873130C
Cited
GB719565A
Cited
GB723750A
Cited
GB749580A
Cited
US2967332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |