Patent US2620311A successfully refreshed from Google Patents.
Patent US2446782A successfully refreshed from Google Patents.
US2460718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loose-leaf binder
Assignee: HEINN Co
•
Filing: 1943-10-11
•
Granted: 1949-02-01
•
Expires: 1963-10-11
Abstract
No abstract record available.
Inventors
- 👤 Stevens Clifford Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:40
CPC Classifications
B; B42; B42F; B42F13/00; B42F13/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US331043A
Cited
GB190325693A
Cited
US794682A
Cited
US843229A
Cited
US873151A
Cited
FR498448A
Cited
US1623339A
Cited
GB309566A
Cited
US1905418A
Cited
US1945970A
Cited
US1894734A
Cited
US1905097A
Cited
US2148789A
Cited
US2191886A
Cited
US2251878A
Cited
US2314204A
Cited
US2330749A
Cited
US2363848A
Cited
US2318431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-01 | 1952-08-02 | 1953-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-01 | 1956-08-02 | 1957-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-01 | 1960-08-02 | 1961-02-01 | $7700.00 | Window Closed / Lapsed |