US2953976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming seams in multiwall bags
Assignee: ST Regis Paper Co
•
Filing: 1956-01-03
•
Granted: 1960-09-27
•
Expires: 1976-01-03
Abstract
No abstract record available.
Inventors
- 👤 Willard E Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:32
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/03; B29C66/034; B29C66/0342; B29C53/00; B29C53/36; B29C53/38; B29C53/48; B29C65/00; B29C65/02; B29C65/14; B29C65/1429; B29C65/1432; B29C65/18; B29C65/20; B29C66/003; B29C66/004; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/432; B29C66/4322; B29C66/70; B29C66/71; B29C66/72; B29C66/723; B29C66/7232; B29C66/72327; B29C66/72328; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/818; B29C66/8181; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83413; B29C66/84; B29C66/851; B29C66/8511; B29C66/87; B29C66/874; B29C66/8744; B29C66/87441; B29C66/90; B29C66/93; B29C66/932; B29C35/00; B29C35/16; B29C2035/1658; B29C66/934; B29K; B29K2711/00; B29K2711/12; B29K2711/123; B29L; B29L2009/00; B29L2009/001; B29L2031/00; B29L2031/712; B29L2031/7128; B31; B31B; B31B2155/00; B31B2170/00; B31B2170/20; B31B70/00; B31B70/26; B31B70/262; B31B70/266; B31B70/60; B31B70/64; B31B70/644
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2289618A
Cited
US2256506A
Cited
US2320564A
Cited
US2389560A
Cited
US2367725A
Cited
US2542900A
Cited
US2516612A
Cited
US2522346A
Cited
US2587211A
Cited
US2832271A
Cited
US2697474A
Cited
US2718915A
Cited
US2641166A
Cited
US2780275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |