US3405720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Movable work etcher
Assignee: SEELYE PLASTIC FAB Inc
•
Filing: 1967-07-27
•
Granted: 1968-10-15
•
Expires: 1987-07-27
Abstract
No abstract record available.
Inventors
- 👤 Keith L Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:40
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US760276A
Cited
US2358507A
Cited
US2328504A
Cited
US2539112A
Cited
US3054411A
Cited
US3192935A
Cited
US3224914A
Cited
US3266502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |