US1457193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for perforating oil-well casings
Assignee: SMITH
•
Filing: 1922-02-21
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Granted: 1923-05-29
•
Expires: 1942-02-21
Abstract
No abstract record available.
Inventors
- 👤 Edward M Smith
- 👤 Richard E Heidrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:50
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/28; B21D28/285; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/306664; Y10T409/306776; Y10T409/307056; Y10T409/307112; Y10T409/307168
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) | 1926-05-28 | 1926-11-27 | 1927-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-05-28 | 1930-11-27 | 1931-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-05-28 | 1934-11-27 | 1935-05-29 | $7700.00 | Window Closed / Lapsed |