US2939195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film fastener
Assignee: Union Carbide Corp
•
Filing: 1957-03-11
•
Granted: 1960-06-07
•
Expires: 1977-03-11
Abstract
No abstract record available.
Inventors
- 👤 Donald W Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:34
CPC Classifications
F; F16; F16B; F16B2/00; F16B2/20; F16B2/22; F16B2/24; F16B2/248; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44034
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US605480A
Cited
US619948A
Cited
US1264515A
Cited
US1401340A
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US1563195A
Cited
US1909561A
Cited
US2089221A
Cited
US2246359A
Cited
US2745163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |