US3503471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monorail brake system
Assignee: Eaton Corp
•
Filing: 1968-04-03
•
Granted: 1970-03-31
•
Expires: 1988-04-03
Abstract
No abstract record available.
Inventors
- 👤 Earl W Balke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:21
CPC Classifications
B; B61; B61K; B61K7/00; B61K7/02; B61K7/04; B61K7/08; B61B; B61B13/00; B61B13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1386496A
Cited
US1959468A
Cited
US2844105A
Cited
US2728538A
Cited
US3154203A
Cited
US3163260A
Cited
US3085659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |