US3403904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic transport device
Assignee: Siemens AG
•
Filing: 1966-07-25
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Granted: 1968-10-01
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Expires: 1986-07-25
Abstract
No abstract record available.
Inventors
- 👤 Kim Jong-Dok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:41
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/08; B65H3/10; G; G06; G06K; G06K13/00; G06K13/02; G06K13/08; G06K13/10; G06K13/107; B65H2301/00; B65H2301/40; B65H2301/42; B65H2301/423; B65H2301/4232; B65H2301/42324
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3286895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |