Patent US1752115A successfully refreshed from Google Patents.
US1752115A
Expired / Lapsed
US
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Machine for manufacturing metallic packing
Assignee: Durametallic Corp
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Filing: 1927-01-14
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Granted: 1930-03-25
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Expires: 1947-01-14
Abstract
No abstract record available.
Inventors
- 👤 Leon A Sliter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:24
CPC Classifications
D; D07; D07B; D07B1/00; D07B1/06; D07B1/0693; D07B3/00; D07B3/02; D07B3/06; D07B5/00; D07B2201/00; D07B2201/20; D07B2201/2001; D07B2201/2002; D07B2201/2003
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) | 1933-03-24 | 1933-09-23 | 1934-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-03-24 | 1937-09-23 | 1938-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-03-24 | 1941-09-23 | 1942-03-25 | $7700.00 | Window Closed / Lapsed |