US2903974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motive power units for model railroads
Assignee: Individual
•
Filing: 1956-06-25
•
Granted: 1959-09-15
•
Expires: 1976-06-25
Abstract
No abstract record available.
Inventors
- 👤 Robert M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:36
CPC Classifications
A; A63; A63H; A63H19/00; A63H19/02; A63H19/10; A63H19/16; A63H19/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US63266A
Cited
US379786A
Cited
US393572A
Cited
US430147A
Cited
US691358A
Cited
US946855A
Cited
US1230625A
Cited
US1411363A
Cited
US1628185A
Cited
US1867678A
Cited
US2616115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |