US3449880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Masonry blocks
Assignee: FRANK T BAILEY JR
•
Filing: 1967-03-01
•
Granted: 1969-06-17
•
Expires: 1987-03-01
Abstract
No abstract record available.
Inventors
- 👤 Frank T Bailey Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:06
CPC Classifications
B; B28; B28B; B28B11/00; B28B11/04; E; E04; E04C; E04C1/00; E04C1/40; E04B; E04B2/00; E04B2/02; E04B2002/0256; E04B2002/0286; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA523407A
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CA567358A
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US2453223A
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US2827385A
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US3145502A
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GB804358A
Cited
US2751775A
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US2868753A
Cited
GB1014795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |