US3237970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mailing envelopes
Assignee: Curtis 1000 Inc
•
Filing: 1964-01-28
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Granted: 1966-03-01
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Expires: 1984-01-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank X Mudd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:09
CPC Classifications
B; B65; B65D; B65D27/00; B65D27/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
IN COMBINATION, AN ENVELOPE INCLUDING AN ENVELOPE BODY HAVING FRONT AND REAR PANELS, FLAPS FORMING EXTENSIONS FROM OPPOSITE ENDS OF ONE OF SAID PANELS OF SAID ENVELOPE BODY, WEAKENDED LINES OF SEPARATION BETWEEN SAID ONE PANEL AND SAID EXTENSIONS, A DUPLICATE FORM ORIGINAL OVERLYING SAID ENVELOPE BODY AND GENERALLY COEXTENSIVE THEREWITH, FLANGES ON OPPOSITE ENDS OF SAID FORM ORIGINAL OVERLYING SAID FLAPS AND SECURED IN FACE CONTACT THEREWITH, WEAKENED LINES OF SEPARATION SUBSTANTIALLY COINCIDING WITH SAID FIRST WEAKENED LINES OF SEPARATION, AND A DUPLICATE FORM DUPLICATE OF SHEET MATERIAL CAPABLE OF PRODUCING VISIBLE INDICIA ON SAID DUPLICATE WHEN DISCRETE AREAS THEREOF ARE SUBJECTED TO PRESSURE SUCH AS BY THAT PRODUCED BY A TYPEWRITER KEY OR PRINTING PLATE, THE PANEL OF SAID ENVELOPE BETWEEN SAID DUPLICATE FORM ORIGINAL AND SAID DUPLICATE FORM DUPLICATE INCLUDES A WINDOW THROUGH WHICH A PORTION OF THE DUPLICATE MAY BE VIEWED WHEN SAID FLAPS AND FLANGES ARE DETACHED FROM SAID ENVELOPE BODY AND ORIGINAL, RESPECTIVELY.
Claim 2
Dependent Claim
159 words
IN COMBINATION, AN ENVELOPE INCLUDING AN ENVELOPE BODY HAVING FRONT AND REAR PANELS, FLAPS FORMING EXTENSIONS FROM OPPOSITE ENDS OF ONE OF SAID PANELS OF SAID ENVELOPE BODY, WEAKENDED LINES OF SEPARATION BETWEEN SAID ONE PANEL AND SAID EXTENSIONS, A DUPLICATE FORM ORIGINAL OVERLYING SAID ENVELOPE BODY AND GENERALLY COEXTENSIVE THEREWITH, FLANGES ON OPPOSITE ENDS OF SAID FORM ORIGINAL OVERLYING SAID FLAPS AND SECURED IN FACE CONTACT THEREWITH, WEAKENED LINES OF SEPARATION SUBSTANTIALLY COINCIDING WITH SAID FIRST WEAKENED LINES OF SEPARATION, AND A DUPLICATE FORM DUPLICATE OF SHEET MATERIAL CAPABLE OF PRODUCING VISIBLE INDICIA ON SAID DUPLICATE WHEN DISCRETE AREAS THEREOF ARE SUBJECTED TO PRESSURE SUCH AS BY THAT PRODUCED BY A TYPEWRITER KEY OR PRINTING PLATE, THE PANEL OF SAID ENVELOPE BETWEEN SAID DUPLICATE FORM ORIGINAL AND SAID DUPLICATE FORM DUPLICATE INCLUDES A WINDOW THROUGH WHICH A PORTION OF THE DUPLICATE MAY BE VIEWED WHEN SAID FLAPS AND FLANGES ARE DETACHED FROM SAID ENVELOPE BODY AND ORIGINAL, RESPECTIVELY.
References Cited (Backward Citations)
US1371670A
Cited
US2669464A
Cited
US2723076A
Cited
US2723077A
Cited
US3018033A
Cited
US3048426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |