US2221740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of slide fastener elements
Assignee: Conmar Products Corp
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Filing: 1937-12-11
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Granted: 1940-11-12
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Expires: 1957-12-11
Abstract
No abstract record available.
Inventors
- 👤 Ulrich Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:39
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/46; B21D53/50; Y; Y10; Y10T; Y10T24/00; Y10T24/25; Y10T24/2539; Y10T24/255; Y10T24/2554; Y10T24/2557; Y10T24/2559; Y10T29/00; Y10T29/49; Y10T29/49782; Y10T29/49785; Y10T29/49789; Y10T29/49794; Y10T428/00; Y10T428/12; Y10T428/12201; Y10T428/12229; Y10T428/12264
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) | 1943-11-12 | 1944-05-13 | 1944-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-11-12 | 1948-05-13 | 1948-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-11-12 | 1952-05-13 | 1952-11-12 | $7700.00 | Window Closed / Lapsed |