Patent US2522736A successfully refreshed from Google Patents.
US2522736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parallel motion multiple spindle head
Assignee: ZAGAR TOOL Inc
•
Filing: 1947-12-02
•
Granted: 1950-09-19
•
Expires: 1967-12-02
Abstract
No abstract record available.
Inventors
- 👤 Frank G Zagar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:53
CPC Classifications
B; B23; B23B; B23B39/00; B23B39/16; B23B39/161; B23B39/163; Y; Y10; Y10T; Y10T408/00; Y10T408/36; Y10T408/38; Y10T408/3817; Y10T408/60; Y10T74/00; Y10T74/18; Y10T74/1836
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US543719A
Cited
US584910A
Cited
US1326863A
Cited
US800722A
Cited
US1281785A
Cited
US1696468A
Cited
US2342251A
Cited
US2369345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |