Patent US3031945A successfully refreshed from Google Patents.
US3031945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air supply grille
Assignee: WATERLOO REGISTER Co Inc
•
Filing: 1960-06-27
•
Granted: 1962-05-01
•
Expires: 1980-06-27
Abstract
No abstract record available.
Inventors
- 👤 Edward T Kelly
- 👤 Joseph M Schaffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:57
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/15; F24F13/02; F24F13/06; F24F13/075; F24F13/1413; F24F13/1426; F24F2013/1453
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US770326A
Cited
US914791A
Cited
US1018750A
Cited
GB191025310A
Cited
US1068965A
Cited
US2043934A
Cited
US2571726A
Cited
US2685246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-30 | 1965-10-30 | 1966-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-30 | 1969-10-30 | 1970-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-30 | 1973-10-30 | 1974-05-01 | $7700.00 | Window Closed / Lapsed |