Patent US5537658A successfully refreshed from Google Patents.
Patent US2867319A successfully refreshed from Google Patents.
Patent US2051246A successfully refreshed from Google Patents.
Patent US2209186A successfully refreshed from Google Patents.
Patent US3516710A successfully refreshed from Google Patents.
US3516710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fold-down backrest and passenger vehicle improvements
Assignee: DC Transit System Inc
•
Filing: 1969-04-04
•
Granted: 1970-06-23
•
Expires: 1989-04-04
Abstract
No abstract record available.
Inventors
- 👤 Thomas Leroy Sherbert
- 👤 Tillison Myron Sherbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:58
CPC Classifications
B; B62; B62D; B62D31/00; B62D31/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |