US951630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for corrugating sheet metal.
Assignee: STEEL FIREPROOFING Co
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Filing: 1908-09-08
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Granted: 1910-03-08
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Expires: 1928-09-08
Abstract
No abstract record available.
Inventors
- 👤 William H Cooley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:21
CPC Classifications
B; B21; B21D; B21D11/00; B21D11/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1913-03-07 | 1913-09-06 | 1914-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-03-07 | 1917-09-06 | 1918-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-03-07 | 1921-09-06 | 1922-03-08 | $7700.00 | Window Closed / Lapsed |