US2903978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transportation system
Assignee: Individual
•
Filing: 1955-04-13
•
Granted: 1959-09-15
•
Expires: 1975-04-13
Abstract
No abstract record available.
Inventors
- 👤 Keyes C Gaynor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:42
CPC Classifications
B; B61; B61J; B61J1/00; B61J1/02; B61D; B61D3/00; B61D3/16; B61D3/18; B61D3/182; B61D3/184; B61J1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USRE16989E
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US2605007A
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US2715971A
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US2787971A
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US2756073A
Cited
US2783900A
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 |