US2983504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring
Assignee: Bayer Corp
•
Filing: 1957-02-04
•
Granted: 1961-05-09
•
Expires: 1977-02-04
Abstract
No abstract record available.
Inventors
- 👤 Reuter Franz Gottfried
- 👤 Ulderup Jurgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:16
CPC Classifications
B; B60; B60G; B60G11/00; B60G11/02; B60G11/10; B60G11/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1691185A
Cited
US2460361A
Cited
US2449510A
Cited
US2703710A
Cited
US2686155A
Cited
GB711620A
Cited
US2770612A
Cited
US2776135A
Cited
US2814604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |