US2852807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for making building panels
Assignee: Individual
•
Filing: 1954-05-11
•
Granted: 1958-09-23
•
Expires: 1974-05-11
Abstract
No abstract record available.
Inventors
- 👤 Robert L Altschuler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:33
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/28; B28B7/30; B28B7/32; B28B1/00; B28B1/002; B28B1/52; B28B3/00; B28B3/003; B28B7/16; B28B7/18; B28B7/186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1149669A
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US1619570A
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US2193879A
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US2394146A
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US2612276A
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US2650412A
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US2528643A
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US2629140A
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US2699590A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |