Patent US2949249A successfully refreshed from Google Patents.
US2949249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winding and unwinding controls
Assignee: Clark Controller Co
•
Filing: 1955-12-19
•
Granted: 1960-08-16
•
Expires: 1975-12-19
Abstract
No abstract record available.
Inventors
- 👤 Paul R Gravenstreter
- 👤 Leslie A Koenig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:20
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/18; B65H23/1806; B65H23/195; B65H23/1955
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2469706A
Cited
US2725507A
Cited
US2777964A
Cited
US2748299A
Cited
US2809312A
Cited
US2806157A
Cited
US2748329A
Cited
US2796222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |