Patent US2918858A successfully refreshed from Google Patents.
US2918858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplicating machine
Assignee: GAF Chemicals Corp
•
Filing: 1956-12-19
•
Granted: 1959-12-29
•
Expires: 1976-12-19
Abstract
No abstract record available.
Inventors
- 👤 Dieterle Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:05
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/30; G03B27/303
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1308709A
Cited
US1529750A
Cited
US1595534A
Cited
US1760149A
Cited
US1759092A
Cited
US1980188A
Cited
US1999965A
Cited
US2228562A
Cited
US2308130A
Cited
US2302277A
Cited
CH223320A
Cited
US2524818A
Cited
US2583678A
Cited
US2515455A
Cited
US2589748A
Cited
US2630744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |