Patent US2697264A successfully refreshed from Google Patents.
US2697264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe perforating machine
Assignee: American Vitrified Products Co
•
Filing: 1950-10-21
•
Granted: 1954-12-21
•
Expires: 1970-10-21
Abstract
No abstract record available.
Inventors
- 👤 John C Queberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:51
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/92; Y; Y10; Y10S; Y10S425/00; Y10S425/037; Y10T; Y10T408/00; Y10T408/55; Y10T408/561; Y10T408/5626; Y10T83/00; Y10T83/202; Y10T83/2074; Y10T83/2081; Y10T83/384; Y10T83/395; Y10T83/808; Y10T83/869; Y10T83/8821; Y10T83/8828; Y10T83/8831; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9428; Y10T83/943
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |