US2729401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rollfilm cartridge
Assignee: GAF Chemicals Corp
•
Filing: 1952-02-11
•
Granted: 1956-01-03
•
Expires: 1972-02-11
Abstract
No abstract record available.
Inventors
- 👤 Victor G Italiano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:50
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/30; G03B2217/00; G03B2217/26; G03B2217/265
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1454836A
Cited
US1686462A
Cited
US1794426A
Cited
US1686204A
Cited
US2019672A
Cited
US2153575A
Cited
US2511383A
Cited
US2519753A
Cited
US2541476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |