US3299513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drafting board
Assignee: Individual
•
Filing: 1964-05-18
•
Granted: 1967-01-24
•
Expires: 1984-05-18
Abstract
No abstract record available.
Inventors
- 👤 Claude L Spring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:05
CPC Classifications
B; B43; B43L; B43L5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN A DRAFTING BOARD, A LOWER FRAME HAVING REARWARD AND FORWARD ENDS, AN UPPER FRAME HAVING REARWARD AND FORWARD ENDS PIVOTALLY SECURED AT ITS FORWARD END TO THE FORWARD END OF SAID LOWER FRAME AND ADAPTED TO ASSUME A FOLDED POSITION ON TOP OF SAID LOWER FRAME AT TIMES, A FIRST ELONGATED ROLLER ROTATABLY SECURED TO SAID UPPER FRAME ADJACENT ITS FORWARD END, A SECOND ELONGATED ROLLER ROTATABLY SECURED TO SAID UPPER FRAME ADJACENT ITS REARWARD END, A CONTINUOUS BELT MEANS MOUNTED ON SAID FIRST AND SECOND ROLLERS, THE FORWARD END OF SAID UPPER FRAME BEING AT SUBSTANTIALLY A RIGHT ANGLE TO THE DIRECTION OF MOVEMENT OF SAID CONTINUOUS BELT MEANS,
Claim 2
Dependent Claim
111 words
IN A DRAFTING BOARD, A LOWER FRAME HAVING REARWARD AND FORWARD ENDS, AN UPPER FRAME HAVING REARWARD AND FORWARD ENDS PIVOTALLY SECURED AT ITS FORWARD END TO THE FORWARD END OF SAID LOWER FRAME AND ADAPTED TO ASSUME A FOLDED POSITION ON TOP OF SAID LOWER FRAME AT TIMES, A FIRST ELONGATED ROLLER ROTATABLY SECURED TO SAID UPPER FRAME ADJACENT ITS FORWARD END, A SECOND ELONGATED ROLLER ROTATABLY SECURED TO SAID UPPER FRAME ADJACENT ITS REARWARD END, A CONTINUOUS BELT MEANS MOUNTED ON SAID FIRST AND SECOND ROLLERS, THE FORWARD END OF SAID UPPER FRAME BEING AT SUBSTANTIALLY A RIGHT ANGLE TO THE DIRECTION OF MOVEMENT OF SAID CONTINUOUS BELT MEANS,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |