US2874688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Masonry cutters
Assignee: Individual
•
Filing: 1957-01-22
•
Granted: 1959-02-24
•
Expires: 1977-01-22
Abstract
No abstract record available.
Inventors
- 👤 Sr Charles W Biesanz
- 👤 Keith J Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:57
CPC Classifications
B; B28; B28D; B28D1/00; B28D1/22; B28D1/222; B28D1/223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1799173A
Cited
US2338471A
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US2426344A
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US2616650A
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US2613661A
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US2657681A
Cited
US2690609A
Cited
US2746447A
Cited
US2779324A
Cited
US2778354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |