Patent US3370990A successfully refreshed from Google Patents.
Patent US3343495A successfully refreshed from Google Patents.
US3343495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway system with locomotive having wheel substitute support means
Assignee: Individual
•
Filing: 1966-01-07
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Granted: 1967-09-26
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Expires: 1986-01-07
Abstract
No abstract record available.
Inventors
- 👤 Petrik Dragan Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:29
CPC Classifications
E; E01; E01B; E01B25/00; B; B61; B61B; B61B13/00; B61B13/08; Y; Y02; Y02A; Y02A30/00; Y02A30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A VEHICLE ADAPTED TO TRAVEL BY SLIDING ON A SOLID SMOOTH SUPPORT AND COMPRISING HOLDERS FOR HOLDING ICE BLOCKS WITH A DOWNWARDLY DIRECTED SIDE OF SAID BLOCKS EXPOSED AND BEARING DOWNWARDLY ONTO SAID SMOOTH SUPPORT IN SLIDING CONTACT THEREWITH, SAID BLOCKS CARRYING THE WEIGHT OF THE VEHICLE, AND MEANS FOR ADVANCING THE BLOCKS IN A DOWNWARD DIRECTION RELATIVE TO THE HOLDER, ADAPTED TO COMPENSATE FOR THE MELTING AND WEARING AWAY OF ICE.
Claim 2
Dependent Claim
72 words
A VEHICLE ADAPTED TO TRAVEL BY SLIDING ON A SOLID SMOOTH SUPPORT AND COMPRISING HOLDERS FOR HOLDING ICE BLOCKS WITH A DOWNWARDLY DIRECTED SIDE OF SAID BLOCKS EXPOSED AND BEARING DOWNWARDLY ONTO SAID SMOOTH SUPPORT IN SLIDING CONTACT THEREWITH, SAID BLOCKS CARRYING THE WEIGHT OF THE VEHICLE, AND MEANS FOR ADVANCING THE BLOCKS IN A DOWNWARD DIRECTION RELATIVE TO THE HOLDER, ADAPTED TO COMPENSATE FOR THE MELTING AND WEARING AWAY OF ICE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |