US2547836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for working sheet material
Assignee: Individual
•
Filing: 1947-02-27
•
Granted: 1951-04-03
•
Expires: 1967-02-27
Abstract
No abstract record available.
Inventors
- 👤 Fred B Pfeiffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:15
CPC Classifications
B; B65; B65B; B65B9/00; B65B9/02; B65B25/00; B65B25/005; B65B25/006; B65B47/00; B65B47/02; B65B61/00; B65B61/04; B65B61/06; B65B61/10; Y; Y10; Y10S; Y10S264/00; Y10S264/71
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2141318A
Cited
US1469875A
Cited
USRE16384E
Cited
US751527A
Cited
US1167036A
Cited
US1191297A
Cited
US1481866A
Cited
US2028700A
Cited
US2037825A
Cited
US2027564A
Cited
US2152101A
Cited
US2403482A
Cited
US2293178A
Cited
US2335190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |