US2933990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spacing device
Assignee: GRAPHIC ARTS RES FOUNDATION IN
•
Filing: 1956-06-08
•
Granted: 1960-04-26
•
Expires: 1976-06-08
Abstract
No abstract record available.
Inventors
- 👤 Rene A Higonnet
- 👤 Louis M Moyroud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:08
CPC Classifications
B; B41; B41B; B41B21/00; B41B21/32; B41B21/34; B41B21/16; B41B21/18; B41B21/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US636062A
Cited
US1166504A
Cited
US1237239A
Cited
US2511646A
Cited
US2487476A
Cited
US2478555A
Cited
US2653508A
Cited
US2670665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |