US2897504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machines for binding sheets of material
Assignee: Individual
•
Filing: 1956-04-19
•
Granted: 1959-08-04
•
Expires: 1976-04-19
Abstract
No abstract record available.
Inventors
- 👤 Erving J Shapiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:05
CPC Classifications
B; B42; B42F; B42F1/00; B42F1/003; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53709; Y10T29/53783; Y10T29/53787; Y10T29/53791
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2073958A
Cited
US2087779A
Cited
US2202905A
Cited
US2405421A
Cited
US2709809A
Cited
DE930844C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |