US2845734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
J brady
Assignee: —
•
Filing: 1955-06-03
•
Granted: 1958-08-05
•
Expires: 1975-06-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:42
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A PROJECTION SLIDE INCLUDING A SUBSTANTIALLY TRANSPARENT SELF-SUSTAINING FLEXIBLE AND NON-FRAGILE SHEET, AND INDICIA-FORMING MATERIAL INTEGRATED THEREWITH, SAID MATERIAL INCLUDING, AS ESSENTIAL INGREDIENTS, A COMPONENT SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL MONOBUTYL ETHER AND BUTYL LACTATE, AND CASTOR OIL.
Claim 2
Dependent Claim
41 words
A PROJECTION SLIDE INCLUDING A SUBSTANTIALLY TRANSPARENT SELF-SUSTAINING FLEXIBLE AND NON-FRAGILE SHEET, AND INDICIA-FORMING MATERIAL INTEGRATED THEREWITH, SAID MATERIAL INCLUDING, AS ESSENTIAL INGREDIENTS, A COMPONENT SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL MONOBUTYL ETHER AND BUTYL LACTATE, AND CASTOR OIL.
References Cited (Backward Citations)
US2183948A
Cited
US2143141A
Cited
US2120673A
Cited
US2511552A
Cited
US2622991A
Cited
US2662033A
Cited
US2748017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |