US3031907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet perforating devices
Assignee: Individual
•
Filing: 1956-03-08
•
Granted: 1962-05-01
•
Expires: 1976-03-08
Abstract
No abstract record available.
Inventors
- 👤 Marshall E Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:36
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/24; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/217; Y10T83/2172; Y10T83/444; Y10T83/447; Y10T83/4473; Y10T83/4531; Y10T83/647; Y10T83/6569; Y10T83/869; Y10T83/8742; Y10T83/8743; Y10T83/8821; Y10T83/8828; Y10T83/8831; Y10T83/8834; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/944
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-30 | 1965-10-30 | 1966-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-30 | 1969-10-30 | 1970-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-30 | 1973-10-30 | 1974-05-01 | $7700.00 | Window Closed / Lapsed |