US1764129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for perforating casings
Assignee: MCEVOY WIRELESS WELL STRAINER
•
Filing: 1925-09-28
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Granted: 1930-06-17
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Expires: 1945-09-28
Abstract
No abstract record available.
Inventors
- 👤 Milon J Trumble
- 👤 Richard C Woodward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:23
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/28; B21D28/285; Y; Y10; Y10T; Y10T83/00; Y10T83/384; Y10T83/395; Y10T83/398; Y10T83/748; Y10T83/7487; Y10T83/7493; Y10T83/7513; Y10T83/869; Y10T83/8821; Y10T83/8841; Y10T83/8845
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) | 1933-06-16 | 1933-12-16 | 1934-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-06-16 | 1937-12-16 | 1938-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-06-16 | 1941-12-16 | 1942-06-17 | $7700.00 | Window Closed / Lapsed |