US2547835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for working sheet material
Assignee: Individual
•
Filing: 1945-11-06
•
Granted: 1951-04-03
•
Expires: 1965-11-06
Abstract
No abstract record available.
Inventors
- 👤 Fred B Pfeiffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:42
CPC Classifications
B; B65; B65B; B65B9/00; B65B9/02; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054; Y10T156/12; Y10T156/1313
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
US892702A
Cited
US1481866A
Cited
US1856694A
Cited
US2155445A
Cited
US2168651A
Cited
US2210509A
Cited
US2166643A
Cited
US2146308A
Cited
US2232783A
Cited
US2302846A
Cited
US2340260A
Cited
US2342977A
Cited
US2403482A
Cited
US2327170A
Cited
US2340106A
Cited
US2490781A
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 |