US2672198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating sheet materials
Assignee: Individual
•
Filing: 1952-01-28
•
Granted: 1954-03-16
•
Expires: 1972-01-28
Abstract
No abstract record available.
Inventors
- 👤 Jones Michael Gravatt
- 👤 Arthur O Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:01
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/02; B65H23/032; B65H23/0326; B29; B29C; B29C53/00; B29C53/80; B29C53/8008; B29C53/8041; B65H23/0328; D; D06; D06C; D06C3/00; B65H2301/00; B65H2301/40; B65H2301/41; B65H2301/414; B65H2301/4148; B65H2301/41487; D06C2700/00; D06C2700/10; Y; Y10; Y10T; Y10T83/00; Y10T83/525; Y10T83/536; Y10T83/538
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) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |