US3499370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tab cutter
Assignee: Langston Co
•
Filing: 1968-03-11
•
Granted: 1970-03-10
•
Expires: 1988-03-11
Abstract
No abstract record available.
Inventors
- 👤 Henry E Kulwicki
- 👤 Henry J Gugolz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:46
CPC Classifications
B; B31; B31B; B31B50/00; B31B50/14; B31B50/146; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/483; Y10T83/4844
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2181197A
Cited
US3353460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |