US3478482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building block construction
Assignee: Individual
•
Filing: 1967-10-24
•
Granted: 1969-11-18
•
Expires: 1987-10-24
Abstract
No abstract record available.
Inventors
- 👤 Richard L Weir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:33
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/02; E04B2/14; E04B2/16; E04B1/00; E04B1/02; E04B1/04; E04B5/00; E04B5/02; E04B5/08; E04G; E04G21/00; E04G21/14; E04B2002/0202; E04B2002/0204; E04B2002/0215; E04B2002/0217
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA477777A
Cited
US1416709A
Cited
GB161790A
Cited
US2684589A
Cited
US2696102A
Cited
GB706227A
Cited
US3239982A
Cited
US3256657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |