US2855998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous web perforating machine
Assignee: National Gypsum Co
•
Filing: 1955-04-12
•
Granted: 1958-10-14
•
Expires: 1975-04-12
Abstract
No abstract record available.
Inventors
- 👤 John A Einhiple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:40
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/02; B26F1/06; B26F1/10; B26F1/08; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19074; Y10T74/19079; Y10T74/19088; Y10T74/1956; Y10T74/19565; Y10T74/1957; Y10T74/19614; Y10T74/19619; Y10T74/19642; Y10T74/19674; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4783; Y10T83/4786
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |