Patent US2575642A successfully refreshed from Google Patents.
US2575642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pleat former and holder
Assignee: Individual
•
Filing: 1948-06-19
•
Granted: 1951-11-20
•
Expires: 1968-06-19
Abstract
No abstract record available.
Inventors
- 👤 August R Sylvanus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:09
CPC Classifications
A; A47; A47H; A47H13/00; A47H13/14; Y; Y10; Y10T; Y10T24/00; Y10T24/34; Y10T24/3467; Y10T24/3476; Y10T24/46; Y10T24/4602; Y10T24/468; Y10T24/4682; Y10T24/4686
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US590401A
Cited
US834188A
Cited
US1295539A
Cited
US1341684A
Cited
US1820997A
Cited
US2180726A
Cited
US2443372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |