Patent US2787041A successfully refreshed from Google Patents.
US2787041A
Expired / Lapsed
US
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Block forming machine
Assignee: Individual
•
Filing: 1955-04-11
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Granted: 1957-04-02
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Expires: 1975-04-11
Abstract
No abstract record available.
Inventors
- 👤 John J Pettipiece
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:38
CPC Classifications
B; B28; B28B; B28B5/00; B28B5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US801799A
Cited
US1280575A
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US1829795A
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US1602172A
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US1717676A
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US2027165A
Cited
US2298446A
Cited
US2653371A
Cited
US2713709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |