Patent US2932181A successfully refreshed from Google Patents.
Patent US2347820A successfully refreshed from Google Patents.
Patent US3733432A successfully refreshed from Google Patents.
Patent US4185145A successfully refreshed from Google Patents.
Patent US2594630A successfully refreshed from Google Patents.
US2594630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape-roll and reel assembly
Assignee: FAIRCHILD RECORDING EQUIPMENT CORP
•
Filing: 1949-11-10
•
Granted: 1952-04-29
•
Expires: 1969-11-10
Abstract
No abstract record available.
Inventors
- 👤 Wentworth D Fling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:23
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US431794A
Cited
US1175995A
Cited
US1288207A
Cited
GB119972A
Cited
US2116735A
Cited
US2129198A
Cited
US2483729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |