US2571978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for preparing masking paper
Assignee: Individual
•
Filing: 1947-10-09
•
Granted: 1951-10-16
•
Expires: 1967-10-09
Abstract
No abstract record available.
Inventors
- 👤 John L Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:54
CPC Classifications
B; B65; B65H; B65H37/00; B65H37/06; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1016; Y10T156/12; Y10T156/1317; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1739; Y10T225/00; Y10T225/20; Y10T225/276; Y10T225/277; Y10T225/278
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) | 1954-10-15 | 1955-04-16 | 1955-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-15 | 1959-04-16 | 1959-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-15 | 1963-04-16 | 1963-10-16 | $7700.00 | Window Closed / Lapsed |