US813049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforating-machine.
Assignee: EW Bliss Co Inc
•
Filing: 1904-06-17
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Granted: 1906-02-20
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Expires: 1924-06-17
Abstract
No abstract record available.
Inventors
- 👤 Bror J Lindgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:56
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/06; B21D28/08; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4486; Y10T83/4488; Y10T83/4539; Y10T83/4541; Y10T83/647; Y10T83/654; Y10T83/6545
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) | 1909-02-19 | 1909-08-21 | 1910-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-02-19 | 1913-08-21 | 1914-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-02-19 | 1917-08-21 | 1918-02-20 | $7700.00 | Window Closed / Lapsed |