US3512439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film cutter
Assignee: Pako Corp
•
Filing: 1967-09-25
•
Granted: 1970-05-19
•
Expires: 1987-09-25
Abstract
No abstract record available.
Inventors
- 👤 Karl J Kallenberg
- 👤 Adrian A Wersal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:09
CPC Classifications
G; G03; G03D; G03D15/00; G03D15/04; G03D15/043; G03D15/046; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4539; Y10T83/4541; Y10T83/4544; Y10T83/4564; Y10T83/869; Y10T83/8798; Y10T83/8817; Y10T83/8818
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2249575A
Cited
US2507395A
Cited
US2554827A
Cited
US2695668A
Cited
US3074607A
Cited
US3174374A
Cited
US3320842A
Cited
US3310211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |